TWI722630B - Light adjusting element and manufacturing method thereof, light source module and manufacturing method thereof, and display device and manufacturing method thereof - Google Patents

Abstract

A light adjusting element and manufacturing method thereof, a light source module and manufacturing method thereof, and a display device and manufacturing method thereof are provided. The light adjusting element has a plurality of light adjusting regions, and the light adjusting element includes a first curing adhesive and a plurality of light adjusting cells. The plurality of light adjusting cells are located in the first curing adhesive, and each of the light adjusting cells has a plurality of liquid crystal molecules, wherein the light adjusting cells are respectively distributed in the light adjusting regions, and the liquid crystal molecules of the light adjusting cells are maintained a state with specific arrangement such that each of the light adjusting regions has a specific light transmittance, and at least part of the specific light transmittances of the light adjusting regions are different from each other.

Description

Light adjusting element and manufacturing method thereof, light source module and manufacturing method thereof, display device and manufacturing method thereof

The present invention relates to an optical element and a manufacturing method thereof, an optical module and a manufacturing method thereof, an optical device and a manufacturing method thereof, and in particular to a light adjusting element and a manufacturing method thereof, a light source module and a manufacturing method thereof, and Display device and manufacturing method thereof.

In recent years, as the use of electronic products has become more and more common, display devices that play an important role in electronic products, such as liquid crystal displays (LCD), have become the focus of attention of designers. Since some types of display panels do not have a light-emitting function, the backlight module is arranged under the display panel to provide a light source to achieve the display function.

Therefore, the quality of the display device will involve the characteristics of various materials such as various optical elements, optical films, and substrates in the backlight module and the display panel, as well as the process yield during the stacking and packaging thereof. When the backlight module is poorly designed or under restricted design conditions, the brightness of the last light emitted may be uneven, and visible unevenness may occur during the light-on test of the display device. Areas, such as: poor brightness or color uniformity, more severe cases will cause visually visible MURA (defects).

At present, in order to reduce the occurrence of these visible non-uniform regions, conventional methods include the following two types of methods. One is to start from the manufacturing process of the backlight module, adding an optical film with high haze or an optical film with a specific microstructure to the backlight module to improve the uniformity of light brightness, or printing on a diffuser. To reduce the brightness of the brighter area directly above the light-emitting element to improve uniformity. However, the dimming effect of the high-haze optical film is limited, and the uniformity cannot be effectively improved on the backlight module with serious periodic MURA (defect) phenomenon, and the fogging effect cannot be modified for some areas. In addition, the above-mentioned methods all perform preset dimming on the visible non-uniform area that may occur, and cannot be adjusted for individual modules.

The other is to start from the grayscale of the display panel, which uses electrical signals to control each area of the display panel, and adjusts the grayscale value of each area of the display panel to counter-compensate the brightness of the visible non-uniform area generated by it. Perform De-mura control methods. However, because this adjustment method adjusts the grayscale value of each area of the display panel, it will reduce the contrast of the display panel and at the same time cause a decrease in brightness, which will affect the quality of the display picture, so the dimming effect has its upper limit. .

The "prior art" paragraph is only used to help understand the content of the present invention, so the contents disclosed in the "prior art" paragraph may include some conventional technologies that do not constitute the common knowledge in the technical field. The content disclosed in the "prior art" paragraph does not represent the content or the problem to be solved by one or more embodiments of the present invention, and has been known or recognized by those with ordinary knowledge in the technical field before the application of the present invention.

The present invention provides a light adjusting element, which when used in a light source module, can enable the light source module to have good optical performance.

The present invention provides a method for manufacturing a light adjustment element, which can manufacture a light adjustment element that enables a light source module to have good optical performance.

The invention provides a light source module, which can provide an illumination beam with good uniformity.

The invention provides a method for manufacturing a light source module, which can manufacture a light source module with a good uniformity of illuminating light beams.

The present invention provides a display device that can provide pictures with good image quality.

The present invention provides a method for manufacturing a display device, which can manufacture a display device with good image quality.

The other objectives and advantages of the present invention can be further understood from the technical features disclosed in the present invention.

In order to achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides a light adjustment element. The light adjustment element has a plurality of light adjustment regions, and the light adjustment element includes a first cured colloid and a plurality of light adjustment unit cells. A plurality of light adjustment unit cells are located in the first cured colloid, and each light adjustment unit cell has a plurality of liquid crystal molecules, wherein the light adjustment unit cells are respectively distributed in the light adjustment regions, and the liquid crystal molecules of each light adjustment unit cell maintain a specific The arrangement state of the light adjustment area is such that each light adjustment area has a specific light transmittance, and the specific light transmittance of at least a part of the light adjustment area is different from each other.

In order to achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides a light source module. The light source module includes the aforementioned light adjusting element and a surface light source. The surface light source has a plurality of illumination areas, wherein the surface light source provides multiple illumination light beams through the illumination area, and the brightness of the illumination light beams provided by at least some of the illumination areas is different from each other. The light adjustment element is located on the transmission path of the illumination light beam, and the illumination area is The provided illumination beams respectively pass through the corresponding light adjustment areas and then leave the light source module.

In order to achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides a display device. The display device includes the aforementioned light source module and a display panel. The display panel is located on the transmission path of the illumination beam from the light source module, and is suitable for adjusting the brightness of each illumination beam from each illumination area.

In an embodiment of the present invention, the above-mentioned first curing gel is a polymer gel.

In an embodiment of the present invention, the above-mentioned light adjustment element further includes a second cured colloid located in the light adjustment unit cell, wherein the second cured colloid maintains a specific arrangement state of the liquid crystal molecules after curing.

In an embodiment of the present invention, the above-mentioned first curing colloid and the second curing colloid are cured through different curing reactions.

In an embodiment of the present invention, one of the above-mentioned first curing colloid and second curing colloid is cured by radiation curing reaction, and the other of the first curing colloid and second curing colloid is cured by thermal curing reaction or chemical reaction. Curing reaction and curing.

In an embodiment of the present invention, the above-mentioned first cured colloid and the second cured colloid are cured by a radiation curing reaction, the first cured colloid is cured after being irradiated with radiant light having a first wavelength band, and the second cured colloid is cured by having The radiation of the second waveband is irradiated and cured, and the first waveband is different from the second waveband.

In an embodiment of the present invention, the liquid crystal molecules of the light adjustment unit cell are reactive liquid crystal molecules, the liquid crystal molecules are cured through a curing reaction, and the liquid crystal molecules maintain a specific arrangement state after curing.

In an embodiment of the present invention, the above-mentioned curing reaction is a radiation curing reaction, and the first curing colloid is cured through a thermal curing reaction or a chemical curing reaction.

In an embodiment of the present invention, the above-mentioned liquid crystal molecules and the first curable colloid are cured by a radiation curing reaction, the first curable colloid is cured after being irradiated with radiant light having a first waveband, and the liquid crystal molecules are cured by radiation having a second waveband. It is cured after being irradiated with light, and the first waveband is different from the second waveband.

In an embodiment of the present invention, the above-mentioned light adjustment area includes a first light adjustment area and a second light adjustment area, and the illumination area includes a first illumination area that provides a first illumination beam and a second illumination area that provides a second illumination beam. Illumination area, the first illumination area corresponds to the first light adjustment area, the second illumination area corresponds to the second light adjustment area, the first light adjustment area has a first light transmittance, and the second light adjustment area has a second light penetration Transmittance, and the brightness of the first illumination beam is greater than the brightness of the second illumination beam, and the first light transmittance is less than the second light transmittance.

In order to achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides a method for manufacturing a light adjustment element. The manufacturing method of the light adjustment element is used to adjust the multiple brightness distribution values of the multiple illumination areas, wherein the brightness distribution values of at least part of the illumination areas are different from each other, and the production method of the light adjustment element includes the following steps. The first cured colloid is cured to precipitate a plurality of light adjustment unit cells, wherein each light adjustment unit cell has a plurality of liquid crystal molecules, and the light adjustment unit cells are respectively distributed in a plurality of light adjustment regions. Based on the brightness distribution value, the specific light transmittance of each light adjustment area corresponding to each illumination area is obtained. The liquid crystal molecules of the light adjustment unit cell are maintained in a specific arrangement state, so that each light adjustment area has a specific light transmittance fixedly, and the specific light transmittance of at least part of the light adjustment area is different from each other.

In order to achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides a method for manufacturing a light source module. The manufacturing method of the light source module includes the following steps. Obtain multiple brightness distribution values corresponding to multiple illumination areas of the surface light source, wherein the surface light source provides multiple illumination light beams through the illumination area, and the brightness distribution values of at least part of the illumination areas are different from each other. The first cured colloid is cured to precipitate a plurality of light adjustment unit cells, wherein each light adjustment unit cell has a plurality of liquid crystal molecules, and the light adjustment unit cells are respectively distributed in a plurality of light adjustment regions. Based on the brightness distribution value, the specific light transmittance of each light adjustment area corresponding to each illumination area is obtained. The liquid crystal molecules of the light adjustment unit cell are maintained in a specific arrangement state, so that each light adjustment area has a specific light transmittance, and the specific light transmittance of at least part of the light adjustment area is different from each other, and the light adjustment element is located in the illumination beam The illuminating light beam provided by the illuminating area passes through the corresponding light adjustment area and then leaves the light source module.

In order to achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides a manufacturing method of a display device. The manufacturing method of the display device includes the following steps. Obtain multiple brightness distribution values corresponding to multiple illumination areas of the surface light source, wherein the surface light source provides multiple illumination light beams through the illumination area, and the brightness distribution values of at least part of the illumination areas are different from each other. The first cured colloid is cured to precipitate a plurality of light adjustment unit cells, wherein each light adjustment unit cell has a plurality of liquid crystal molecules, and the light adjustment unit cells are respectively distributed in a plurality of light adjustment regions. Based on the brightness distribution value, the specific light transmittance of each light adjustment area corresponding to each illumination area is obtained. The liquid crystal molecules of the light adjustment unit cell are maintained in a specific arrangement state, so that each light adjustment area has a specific light transmittance, and the specific light transmittance of at least part of the light adjustment area is different from each other, wherein the light adjustment element is located in the illumination On the transmission path of the light beam, and the illumination light beam provided by the illumination area passes through the corresponding light adjustment area and leaves the light source module. The brightness of each illuminating light beam from each illuminating area is adjusted separately through the display panel.

In an embodiment of the present invention, the above-mentioned light adjustment element further includes a second cured colloid, the second cured colloid is located in the light adjustment unit cell, and the method for maintaining the liquid crystal molecules of the light adjustment unit cell in a specific arrangement state includes the following step. Two electrode plates are provided, wherein the light adjustment element is located between the two electrode plates, at least one of the two electrode plates has a plurality of voltage application areas, and the voltage application area corresponds to the light adjustment area. Based on the specific light transmittance distribution value of each light adjustment area, the applied voltage value of each applied voltage area is calculated, wherein the applied voltage value of at least part of the applied voltage area is different from each other. Based on the applied voltage value, the two electrode plates apply voltage to the corresponding light adjustment area in the light adjustment element. The second solidified colloid is cured, so that the liquid crystal molecules of the light-adjusting unit cell maintain a specific arrangement state.

In an embodiment of the present invention, the above-mentioned liquid crystal molecules are reactive liquid crystal molecules, and the method for maintaining the liquid crystal molecules of the light adjustment cell in a specific arrangement state includes the following steps. Two electrode plates are provided, wherein the light adjustment element is located between the two electrode plates, at least one of the two electrode plates has a plurality of voltage application areas, and the voltage application area corresponds to the light adjustment area. Based on the specific light transmittance distribution value of each light adjustment area, the applied voltage value of each applied voltage area is calculated, wherein the applied voltage value of at least part of the applied voltage area is different from each other. Based on the applied voltage value, the two electrode plates apply voltage to the corresponding light adjustment area in the light adjustment element. The liquid crystal molecules are cured so that the liquid crystal molecules of the light adjustment unit cell maintain a specific arrangement state.

Based on the above, the embodiments of the present invention have at least one of the following advantages or effects. In the embodiment of the present invention, the display device and the light source module will be capable of dimming the illumination beam provided by each illumination area to different degrees through the configuration of the light adjustment element, thereby eliminating or reducing the difference caused by the surface light source. The MURA (defect) phenomenon that may be caused by the different brightness of the illuminated area. In addition, the display panel of the display device can also be used to adjust the brightness of each illumination beam from each illumination area, and then fine-tune the brightness of each illumination beam in each illumination area to further eliminate the final MURA (defect) phenomenon. In addition, since the brightness of the different illumination areas of the surface light source has been compensated by the corresponding light adjustment area, the adjustment performed by the display panel can be fine-tuned to a lesser degree without affecting the quality of the display screen.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

The foregoing and other technical contents, features, and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the drawings. The directional terms mentioned in the following embodiments, for example: up, down, left, right, front or back, etc., are only directions for referring to the attached drawings. Therefore, the directional terms used are used to illustrate but not to limit the present invention.

FIG. 1A is a schematic cross-sectional view of a display device according to an embodiment of the invention. FIG. 1B is a schematic cross-sectional view of a light adjustment element of FIG. 1A. 1A, in this embodiment, the display device 300 includes a light source module 200 and a display panel 310, and the light source module 200 includes a light adjusting element 100 and a surface light source 210. For example, in this embodiment, the surface light source 210 of the light source module 200 is a direct type backlight module, and the display panel 310 is a liquid crystal panel, but the invention is not limited to this. In other embodiments, the surface light source 210 of the light source module 200 may also be an edge-type backlight module. For example, as shown in FIG. 1A, in this embodiment, the surface light source 210 has a plurality of illumination areas IL, wherein the surface light source 210 provides a plurality of illumination light beams L through the illumination area IL, and at least part of the illumination area IL provides The brightness of the illumination light beams L are different from each other.

Specifically, as shown in FIG. 1A, in this embodiment, the light adjustment element 100 is located on the transmission path of the illumination light beam L, and the display panel 310 is located on the transmission path of the illumination light beam L from the light source module 200. In addition, in this embodiment, the surface light source 210 of the light source module 200 further includes a plurality of light-emitting elements 211 and a plurality of optical films 212, and the light adjustment element 100 is located between the plurality of light-emitting elements 211 and the plurality of optical films 212. However, the present invention is not limited to this.

More specifically, as shown in FIGS. 1A and 1B, in this embodiment, the light adjustment element 100 has a plurality of light adjustment areas LA, and the light adjustment element 100 includes a first cured gel 110, a second cured gel 130, and There are a plurality of light adjustment cell 120, and each light adjustment cell 120 has a plurality of liquid crystal molecules LC. In addition, as shown in FIG. 1B, in this embodiment, the light adjusting cells 120 are respectively distributed in the light adjusting regions LA, and the liquid crystal molecules LC of each light adjusting cell 120 maintain a specific arrangement state, so that each light The adjustment area LA fixedly has a specific light transmittance.

In more detail, as shown in FIG. 1B, in this embodiment, the light adjustment unit cells 120 are located in the first cured colloid 110. For example, the first cured colloid 110 is, for example, a polymer glue, and the light adjustment unit cells 120 are precipitated during the curing of the first cured colloid 110. On the other hand, as shown in FIG. 1B, in this embodiment, the second cured colloid 130 is located in the light adjustment cell 120, and the second cured colloid 130 can maintain the liquid crystal molecules LC in a specific arrangement state after being cured. Furthermore, in this embodiment, the first cured colloid 110 and the second cured colloid 130 are cured through different curing reactions. In this way, the step of adjusting the precipitation of the unit cell 120 by light and maintaining the liquid crystal molecules LC in a specific arrangement state The steps can be carried out in different process steps.

For example, as shown in FIG. 1B, the light adjustment area LA includes a first light adjustment area LA1 and a second light adjustment area LA2. The optical axis directions of the liquid crystal molecules LC of the light adjustment cell 120 in the first light adjustment area LA1 are substantially chaotic and interlaced with each other. Therefore, at this time, the incident light will be scattered by the liquid crystal molecules LC of the light adjustment cell 120, causing The light adjustment unit cell 120 presents an atomized state, and enables the first light adjustment area LA1 to have a first light transmittance. On the other hand, the optical axis directions of the liquid crystal molecules LC of the light adjustment cell 120 in the second light adjustment area LA2 are substantially the same, so the incident light can pass through the light adjustment cell 120 of the second light adjustment area LA2 at this time. The light adjustment unit cell 120 is rendered transparent, and the second light adjustment area LA2 has the second light transmittance. This also means that in this embodiment, the first light transmittance is less than the second light transmittance.

Also, as shown in FIG. 1B, in this embodiment, the specific light transmittances of at least a part of the light adjustment area LA are different from each other. In other words, in this embodiment, a part of the light adjustment unit cell 120 of the light adjustment area LA may exhibit different degrees of fogging state similar to the situation of the light adjustment unit cell 120 of the first light adjustment area LA1, or there may be another part. The light adjustment unit cell 120 of the light adjustment area LA will present a transparent state like the light adjustment unit cell 120 of the second light adjustment area LA2.

In this way, the specific light transmittance of at least a part of the light adjustment area LA of the light adjustment element 100 is configured to be different from each other, so that the different illumination areas IL of the surface light source 210 can be dimmed. For example, as shown in FIG. 1A, in this embodiment, the illumination area IL of the surface light source 210 includes a first illumination area IL1 that provides a first illumination light beam L1 and a second illumination area IL2 that provides a second illumination light beam L2. And the brightness of the first illumination light beam L1 is greater than the brightness of the second illumination light beam L2. In this case, as long as the first illumination area IL1 corresponds to the first light adjustment area LA1 and the second illumination area IL2 corresponds to the second light adjustment area LA2, the brightness of the first illumination light beam L1 will be changed by the first light adjustment area LA2. The adjustment area LA1 has a lower first light transmittance and decreases, and the brightness of the second illumination beam L2 can also maintain its original brightness because the second light adjustment area LA2 has a higher second light transmittance. In this way, the different illumination light beams L provided by the different illumination areas IL can obtain the corresponding dimming effect when they respectively pass through the corresponding light adjustment area LA, and then can have uniform brightness after leaving the light source module 200.

In this way, the display device 300 and the light source module 200 can dimming the illumination light beam L provided by each illumination area IL to different degrees through the configuration of the light adjustment element 100, thereby eliminating or reducing the problem of the surface light source 210. MURA (defect) phenomenon may be caused by different illumination areas IL with different brightness. In addition, in this embodiment, the display panel 310 can also be used to adjust the brightness of each illumination light beam L from each illumination area IL, and fine-tune the brightness of each illumination light beam L from each illumination area IL to further eliminate The last MURA (defect) phenomenon. In addition, since the brightness of the different illumination areas IL of the surface light source 210 has been compensated by the corresponding light adjustment area LA, the adjustment performed by the display panel 310 can be fine-tuned to a lesser degree without affecting the quality of the display screen. .

Hereinafter, further explanations will be made on each process step of the manufacturing method of the light adjusting element 100, the light source module 200, and the display device 300.

FIG. 2A is a schematic structural diagram of a manufacturing apparatus according to an embodiment of the present invention. FIG. 2B is a flowchart of a manufacturing method of a display device according to an embodiment of the present invention. Specifically, as shown in FIG. 2A, the production apparatus MA includes a screen brightness capturing unit IU, a processing unit PU, a power supply unit EU, and a curing unit CU. The processing unit PU is electrically connected to the screen brightness capturing unit IU and the power supply unit EU, respectively. In this way, the processing unit PU can control the operation of the screen brightness capturing unit IU and the power supply unit EU. For example, the manufacturing device MA shown in FIG. 2A can be used to implement the manufacturing method of the display device 300 in FIG. 2B to manufacture the light adjustment element 100 of the light source module 200.

3A and 3B are schematic diagrams of the flow of precipitation of multiple light adjustment unit cells. For example, as shown in FIGS. 2A to 3B, in this embodiment, the curing unit CU may perform step S110 of the method S100 of manufacturing the light adjusting element 100 to cure the first cured colloid 110 of the light adjusting element 100 to deposit A plurality of light adjustment unit cells 120. Furthermore, as shown in FIG. 3B, when the light adjustment unit cell 120 is precipitated, the optical axis directions of the liquid crystal molecules LC of the light adjustment unit cell 120 are substantially chaotic and interlaced with each other, so that the light adjustment unit cell 120 at this time 120 is in an atomized state.

On the other hand, as shown in FIGS. 2A to 2B, in this embodiment, the processing unit PU and the screen brightness capturing unit IU can perform step S10 of the manufacturing method S200 of the light source module 200 to obtain a plurality of surface light sources 210 A plurality of brightness distribution values corresponding to the illumination area IL, wherein the brightness distribution values of at least part of the illumination area IL are different from each other, and these brightness distribution values are input to the processing unit PU. In addition, the processing unit PU may perform step S120 to obtain the specific light transmittance of each light adjustment area LA corresponding to each illumination area IL based on the brightness distribution value. The processing unit PU, the power supply unit EU, and the curing unit CU may further perform step S130 accordingly to maintain the liquid crystal molecules LC of the light adjustment unit cell 120 in a specific arrangement state, so that each light adjustment area LA has a fixed light penetration The specific light transmittance of at least part of the light adjustment area LA is different from each other.

The following will further explain the execution process of step S130 in conjunction with FIGS. 4A to 4F.

FIG. 4A is a flowchart of the process steps of FIG. 2B for maintaining the liquid crystal molecules of the light adjustment unit cell in a specific arrangement state. 4B and 4C are respectively top views of the two electrode plates of FIG. 2A. FIG. 4D is a schematic diagram showing that the liquid crystal molecules of the light adjustment cell 120 maintain a specific arrangement state by externally applying a voltage. For example, as shown in FIGS. 4A to 4D, in this embodiment, step S130 includes the following sub-step S131, sub-step S132, sub-step S133, and sub-step S134. First, as shown in FIGS. 4A to 4D, sub-step S131 is performed to provide two electrode plates EP, wherein the light adjustment element 100 is located between the two electrode plates EP, and at least one of the two electrode plates EP has a plurality of voltage application regions ER, the applied voltage area ER corresponds to the light adjustment area LA. In this embodiment, the upper electrode plate EP1 is a complete electrode plate EP. The lower electrode plate EP2 is composed of a plurality of electrodes separated from each other to form the voltage application area ER, but the present invention is not limited to this. In another embodiment not shown, the lower electrode plate EP2 may be a complete electrode plate EP, and the upper electrode plate EP1 may be a configuration composed of a plurality of electrodes separated from each other. Moreover, in the above-mentioned embodiment, by the configuration in which one electrode plate EP is a complete electrode plate EP, and the other electrode plate EP is composed of a plurality of electrodes separated from each other, the two electrode plates EP do not need to be aligned. In this way, each applied voltage region ER can be formed, and the applied voltage value of each applied voltage region ER can be independently controlled.

Next, as shown in FIGS. 4A and 4D, sub-step S132 is executed, and the processing unit PU calculates the applied voltage value of each applied voltage area ER based on the specific light transmittance distribution value of each light adjustment area LA. Among them, the applied voltage values of at least part of the applied voltage regions ER are different from each other. In addition, the sub-step S133 is executed, and the processing unit PU controls the power supply unit EU based on the applied voltage value so that the two-electrode plate EP applies a voltage to the corresponding light adjustment area LA in the light adjustment element 100.

Fig. 4E is a graph showing the relationship between the haze of the light adjustment cell and the externally applied voltage. Fig. 4F is a graph showing the relationship between the transmittance of the light adjustment unit cell and the externally applied voltage. Furthermore, as shown in FIG. 4E and FIG. 4F, since the haze and transmittance of the light adjustment cell 120 will vary with the change of the externally applied voltage, when each applied voltage region ER faces the light adjustment element When different voltage values are applied to the corresponding light adjustment areas LA in the light adjustment areas LA, the liquid crystal molecules LC of the light adjustment cells 120 of each light adjustment area LA can present a specific arrangement state, so that the light adjustment cells 120 at this time are in a transparent state or Different degrees of atomization. Then, the sub-step S134 is performed to cure the second cured colloid 130, so that the liquid crystal molecules LC of the light adjustment unit cell 120 can maintain a specific arrangement state even after the power supply unit EU is turned off.

It is worth noting that in this embodiment, since the first curing gel 110 and the second curing gel 130 are cured in different process steps, the first curing gel 110 and the second curing gel 130 will undergo different curing processes. Reaction and curing. For example, in this embodiment, when one of the first cured colloid 110 and the second cured colloid 130 is cured by a radiation curing reaction, the other of the first cured colloid 110 and the second cured colloid 130 can be cured through It is cured by a thermal curing reaction or a chemical curing reaction. Alternatively, in this embodiment, both the first curing colloid 110 and the second curing colloid 130 can be cured by a radiation curing reaction, but the first curing colloid 110 is cured after being irradiated with radiation light having a first wavelength band. The secondary curing gel 130 can be cured after being irradiated with radiation light having a second wavelength band, and the first wavelength band is different from the second wavelength band. In this way, the first curing gel 110 and the second curing gel 130 can be respectively cured in the required manufacturing steps.

In this way, the manufacturing apparatus MA performs step S10 of the manufacturing method S200 of the light source module 200 and the steps S110, S120, and S130 of the manufacturing method S100 of the light adjustment element 100 to form the one shown in FIGS. 1A and 1B. The light adjustment element 100 used for the light source module 200. In addition, the manufacturing device MA can also selectively execute step S310 of the manufacturing method S300 of the display device 300, and adjust the brightness of each illuminating light beam L from each illuminating area IL through the display panel 310, so that the brightness of each illuminating area IL can be adjusted. The brightness of each illuminating light beam L is then fine-tuned to further eliminate the final MURA (defect) phenomenon, and the display device 300 is completed.

It is worth noting that, in the foregoing embodiment, although the light adjustment element 100 uses the second cured colloid 130 to maintain the liquid crystal molecules LC of the light adjustment cell 120 as an example, the present invention does not take this as an example. Is limited. In other embodiments, the liquid crystal molecules LC of the light adjustment unit cell 120 can maintain a specific arrangement state. Hereinafter, some other embodiments will be cited for description.

FIG. 5A is a flowchart of another process step for maintaining the liquid crystal molecules of the light adjusting cell in a specific arrangement state. 5B is a schematic cross-sectional view of the light adjustment element formed through the process steps of FIG. 5A. As shown in FIG. 5A and FIG. 5B, in this embodiment, the process steps of FIG. 5A for maintaining the liquid crystal molecules LC of the light adjusting cell 120 in a specific arrangement state are the same as those of FIG. 4A for making the liquid crystal molecules LC of the light adjusting cell 120 The process steps for maintaining a specific arrangement state are similar. The only difference is that in this embodiment, the liquid crystal molecules LC of the light-adjusting cell 120 are reactive liquid crystal molecules, so the liquid crystal molecules LC can be cured through a curing reaction, and the liquid crystal molecules The LC maintains a specific arrangement state after curing. Therefore, the sub-step S134A of step S130A in FIG. 5A is to cure the liquid crystal molecules LC, and the second curing colloid 130 is not required to adjust the liquid crystal of the cell 120. The molecular LC maintains a specific arrangement state.

Specifically, the first curing colloid 110 and the liquid crystal molecules LC are also cured in different process steps, and therefore need to be cured through different curing reactions. For example, in this embodiment, the liquid crystal molecules LC are cured through a radiation curing reaction. Therefore, the first cured colloid 110 can be cured through a thermal curing reaction or a chemical curing reaction. Or, both the first cured colloid 110 and the liquid crystal molecules LC are cured by a radiation curing reaction, but the first cured colloid 110 is cured by irradiating light with a first wavelength band, and the liquid crystal molecules LC are cured by a second wavelength band. The radiant light is irradiated and cured, and the first waveband is different from the second waveband. In this way, the step of curing the first cured colloid 110 and the liquid crystal molecules LC can be performed separately in the required process steps.

In this way, the light adjustment element 100A as shown in FIG. 5B can be formed. In addition, since the second cured colloid 130 is not required to maintain the liquid crystal molecules LC of the light adjusting cell 120 in a specific arrangement state in this embodiment, the light adjusting element 100A does not have the second cured colloid 130.

In addition, in this embodiment, since the liquid crystal molecules LC of the light adjustment cell 120 of the light adjustment element 100A can also maintain a specific arrangement state, the light adjustment element 100A can achieve a function similar to that of the light adjustment element 100 of FIG. 1B. Therefore, the light adjustment element 100A can achieve similar effects and advantages as the aforementioned light adjustment element 100, and will not be repeated here. Moreover, when the light adjusting element 100A is applied to the aforementioned light source module 200 and the display device 300, the light source module 200 and the display device 300 can also achieve similar effects and advantages, which will not be repeated here.

6 is a schematic cross-sectional view of a display device according to an embodiment of the invention. The light source module 200A and the display device 300A of this embodiment are similar to the light source module 200 and the display device 300 of FIG. 1A, but the differences are as follows. 6, in this embodiment, the light source module 200A or the light adjustment element 100A is not located between the plurality of light emitting elements 211 and the plurality of optical films 212, but can be located between any two optical films 212. In another embodiment, the light adjusting element 100A may be located between the surface light source 210 and the display panel 310 (not shown), as long as it is located on the transmission path of the illumination light beam L. In other words, in this embodiment, the light adjustment element 100A can be placed on any layer of the display device 300A according to requirements, and can be placed in different positions according to different requirements in the manufacturing process, and the present invention is not limited thereto.

In this way, the display device 300A and the light source module 200A can also eliminate or alleviate the MURA (defect) phenomenon that may be caused by the different illumination regions IL of the surface light source 210 having different brightness through the configuration of the light adjusting element 100A. , And achieve the effects and advantages similar to the aforementioned display device 300 and the light source module 200, which will not be repeated here.

In summary, the embodiments of the present invention have at least one of the following advantages or effects. In the embodiment of the present invention, the display device and the light source module will be capable of dimming the illumination beam provided by each illumination area to different degrees through the configuration of the light adjustment element, thereby eliminating or reducing the difference caused by the surface light source. The MURA (defect) phenomenon that may be caused by the different brightness of the illuminated area. In addition, the display panel of the display device can also be used to adjust the brightness of each illumination beam from each illumination area, and then fine-tune the brightness of each illumination beam in each illumination area to further eliminate the final MURA (defect) phenomenon. In addition, since the brightness of the different illumination areas of the surface light source has been compensated by the corresponding light adjustment area, the adjustment performed by the display panel can be fine-tuned to a lesser degree without affecting the quality of the display screen.

However, the above are only preferred embodiments of the present invention, and should not be used to limit the scope of implementation of the present invention, that is, simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the description of the invention, All are still within the scope of the invention patent. In addition, any embodiment of the present invention or the scope of the patent application does not have to achieve all the objectives or advantages or features disclosed in the present invention. In addition, the abstract part and title are only used to assist in searching for patent documents, and are not used to limit the scope of rights of the present invention. In addition, the terms "first" and "second" mentioned in this specification or the scope of the patent application are only used to name the element (element) or to distinguish different embodiments or ranges, and are not used to limit the number of elements. Upper or lower limit.

100, 100A: light adjustment element 110: The first curing colloid 120: light adjustment unit cell 130: second curing colloid 200, 200A: light source module 210: Surface light source 211: Light-emitting element 212: Optical Film 300, 300A: display device 310: display panel CU: curing unit EP: Electrode plate EP1: Upper electrode plate EP2: Lower electrode plate ER: applied voltage area EU: Power Supply Unit IL: lighting area IL1: the first lighting area IL2: second lighting area IU: Screen brightness capture unit L: Illumination beam L1: first illumination beam L2: second illumination beam LA: Light adjustment area LA1: The first light adjustment area LA2: Second light adjustment area LC: Liquid crystal molecules MA: Production device PU: Processing Unit S100: Manufacturing method of light adjustment element S200: Manufacturing method of light source module S300: Manufacturing method of display device S10, S110, S120, S130, S130A, S310: steps S131, S132, S133, S134, S134A: sub-step

FIG. 1A is a schematic cross-sectional view of a display device according to an embodiment of the invention. FIG. 1B is a schematic cross-sectional view of a light adjustment element of FIG. 1A. FIG. 2A is a schematic structural diagram of a manufacturing apparatus according to an embodiment of the present invention. FIG. 2B is a flowchart of a manufacturing method of a display device according to an embodiment of the present invention. 3A and 3B are schematic diagrams of the flow of precipitation of multiple light adjustment unit cells. FIG. 4A is a flowchart of the process steps of FIG. 2B for maintaining the liquid crystal molecules of the light adjustment unit cell in a specific arrangement state. 4B and 4C are respectively top views of the two electrode plates of FIG. 2A. FIG. 4D is a schematic diagram showing that the liquid crystal molecules of the light adjusting cell maintain a specific arrangement state by externally applying a voltage. Fig. 4E is a graph showing the relationship between the haze of the light adjustment cell and the externally applied voltage. Fig. 4F is a graph showing the relationship between the transmittance of the light adjustment unit cell and the externally applied voltage. FIG. 5A is a flowchart of another process step for maintaining the liquid crystal molecules of the light adjusting cell in a specific arrangement state. 5B is a schematic cross-sectional view of the light adjustment element formed through the process steps of FIG. 5A. 6 is a schematic cross-sectional view of a display device according to an embodiment of the invention.

100: light adjustment element

200: light source module

210: Surface light source

211: Light-emitting element

212: Optical Film

300: display device

310: display panel

IL: lighting area

IL1: the first lighting area

IL2: second lighting area

L: Illumination beam

L1: first illumination beam

L2: second illumination beam

LA: Light adjustment area

LA1: The first light adjustment area

LA2: Second light adjustment area

Claims (26)

A light adjustment element has a plurality of light adjustment regions, and the light adjustment element includes: a first cured colloid; and a plurality of light adjustment unit cells located in the first cured colloid, each of the light adjustment unit cells has a plurality of Liquid crystal molecules, wherein the light-adjusting cells are respectively distributed in the light-adjusting regions, and the liquid crystal molecules of each of the light-adjusting cells maintain a specific arrangement state, so that each of the light-adjusting regions is A specific light transmittance is fixed without an applied voltage, and the specific light transmittances of at least a part of the light adjustment regions are different from each other. According to the light adjustment element described in item 1 of the scope of patent application, the first cured colloid is a polymer adhesive. As described in the first item of the scope of patent application, the light adjustment element further includes: a second cured colloid located in the light adjustment unit cells, wherein the second cured colloid allows the liquid crystal molecules to maintain the specific Arrangement status. According to the light adjustment element described in item 3 of the scope of patent application, the first curing colloid and the second curing colloid are cured through different curing reactions. The light adjustment element according to claim 4, wherein one of the first cured colloid and the second cured colloid is cured by a radiation curing reaction, and the other of the first cured colloid and the second cured colloid One is cured through a thermal curing reaction or a chemical curing reaction. The light adjustment element according to claim 4, wherein the first cured colloid and the second cured colloid are cured by a radiation curing reaction, and the first cured colloid is irradiated with radiation light having a first wavelength band. Curing, the second curing colloid is cured after being irradiated with radiation light having a second waveband, and the first waveband is different from the second waveband. As for the light adjustment element described in the first item of the patent application, the liquid crystal molecules of the light adjustment unit cells are reactive liquid crystal molecules, the liquid crystal molecules are cured through a curing reaction, and the liquid crystal molecules are being cured After that, the specific arrangement state is maintained. According to the light adjustment element described in item 7 of the scope of patent application, the curing reaction is a radiation curing reaction, and the first curing colloid is cured through a thermal curing reaction or a chemical curing reaction. The light adjustment element according to item 7 of the scope of patent application, wherein the liquid crystal molecules and the first curing colloid are cured by a radiation curing reaction, and the first curing colloid is cured after being irradiated with radiation light having a first wavelength band , The liquid crystal molecules are cured after being irradiated with radiation light having a second waveband, and the first waveband is different from the second waveband. A manufacturing method of a light adjusting element is used to adjust a plurality of brightness distribution values of a plurality of illumination areas, wherein the brightness distribution values of at least part of the illumination areas are different from each other, and the manufacturing method of the light adjusting element includes: curing one The first curing colloid is used to precipitate a plurality of light-adjusting unit cells, wherein each of the light-adjusting unit cells has a plurality of liquid crystal molecules, and the light-adjusting unit cells are respectively distributed in a plurality of Obtaining a specific light transmittance of each of the light adjustment regions corresponding to each of the illumination regions based on the brightness distribution values; and maintaining the liquid crystal molecules of the light adjustment cells The specific arrangement state is such that each of the light adjustment regions has the specific light transmittance without an applied voltage, and the specific light transmittances of at least some of the light adjustment regions are different from each other. According to the manufacturing method of the light adjustment element described in item 10 of the scope of patent application, the first curing colloid is a polymer adhesive. According to the manufacturing method of the light adjustment element described in claim 10, the light adjustment element further includes a second cured colloid, the second curable colloid is located in the light adjustment unit cells, and the light adjustment The method for maintaining the specific arrangement state of the liquid crystal molecules of the unit cell includes: providing two electrode plates, wherein the light adjustment element is located between the two electrode plates, and at least one of the two electrode plates has a plurality of voltage application regions , The applied voltage regions correspond to the light adjustment regions; based on the specific light transmittance distribution value of each of the light adjustment regions, an applied voltage value of each of the applied voltage regions is calculated, wherein at least part of the The applied voltage values of the applied voltage regions are different from each other; based on the applied voltage values, the two electrode plates apply voltage to the corresponding light adjustment regions in the light adjustment element; and the second cured colloid is cured to make The light adjusts the liquid crystal molecular dimensions of the unit cell Maintain the specific arrangement state. According to the manufacturing method of the light adjustment element described in item 12 of the scope of patent application, the first curing colloid and the second curing colloid are cured through different curing reactions. According to the method of manufacturing the light adjustment element described in claim 13, wherein one of the first cured colloid and the second cured colloid is cured by a radiation curing reaction, and the first cured colloid and the second cured colloid are cured The other of the colloid is cured through a thermal curing reaction or a chemical curing reaction. According to the manufacturing method of the light adjustment element described in the scope of the patent application, the first curing colloid and the second curing colloid are cured by a radiation curing reaction, and the first curing colloid is cured by radiation having a first wavelength band. It is cured after being irradiated, and the second cured colloid is cured after being irradiated with radiation light having a second waveband, and the first waveband is different from the second waveband. According to the method of manufacturing the light adjustment element described in claim 10, the liquid crystal molecules are reactive liquid crystal molecules, and the method for maintaining the liquid crystal molecules of the light adjustment unit cells in the specific arrangement state includes : Provide two electrode plates, wherein the light adjustment element is located between the two electrode plates, at least one of the two electrode plates has a plurality of voltage application areas, and the voltage application areas correspond to the light adjustment areas; The specific light transmittance distribution value of each of the light adjustment regions is calculated, an applied voltage value of each of the applied voltage regions is calculated, wherein the applied voltage values of at least some of the applied voltage regions are different from each other; Based on the applied voltage values, the two electrode plates apply voltage to the corresponding light adjustment regions in the light adjustment element; and cure the liquid crystal molecules so that the liquid crystal molecules of the light adjustment cells maintain the Specific arrangement status. According to the manufacturing method of the light adjustment element described in the scope of the patent application, the liquid crystal molecules are cured through a radiation curing reaction, and the first cured colloid is cured through a thermal curing reaction or a chemical curing reaction. According to the method of manufacturing the light adjustment element described in the scope of the patent application, the liquid crystal molecules and the first cured colloid are cured by a radiation curing reaction, and the first cured colloid is irradiated with radiation light having a first wavelength band After curing, the liquid crystal molecules are cured after being irradiated with radiant light having a second waveband, and the first waveband is different from the second waveband. A light source module includes: a light adjustment element having a plurality of light adjustment regions, and the light adjustment element includes: a first cured colloid; and a plurality of light adjustment unit cells located in the first cured colloid, each of the The light-adjusting unit cells have a plurality of liquid crystal molecules, and the light-adjusting unit cells are respectively distributed in the light-adjusting regions, and the liquid crystal molecules of the light-adjusting unit cells maintain a specific arrangement state, so that Each of the light adjustment regions has a specific light transmittance without applying voltage, and the specific light transmittances of at least part of the light adjustment regions are different from each other; and a surface light source with multiple illuminations Area, where the surface light source is illuminated by the The areas respectively provide a plurality of illumination beams, at least some of the illumination areas provided by the illumination areas have different brightnesses from each other, the light adjustment element is located on the transmission path of the illumination beams, and the illumination areas provided by the illumination areas The illuminating light beams respectively pass through the corresponding light adjustment areas and then leave the light source module. A light source module includes: a light adjustment element having a plurality of light adjustment regions, and the light adjustment element includes: a first cured colloid; and a plurality of light adjustment unit cells located in the first cured colloid, each of the The light-adjusting unit cells have a plurality of liquid crystal molecules, and the light-adjusting unit cells are respectively distributed in the light-adjusting regions, and the liquid crystal molecules of the light-adjusting unit cells maintain a specific arrangement state, so that Each of the light adjustment areas fixedly has a specific light transmittance, and the specific light transmittances of at least part of the light adjustment areas are different from each other; and a surface light source has a plurality of illumination areas, wherein the surface light source passes through The illumination areas respectively provide a plurality of illumination light beams, at least some of the illumination light beams provided by the illumination areas have different brightnesses from each other, the light adjustment element is located on the transmission path of the illumination light beams, and the illumination areas provide The illumination beams respectively pass through the corresponding light adjustment areas and then leave the light source module, wherein the light adjustment areas include a first light adjustment area and a second light adjustment area, and the illumination areas include providing a second light adjustment area. A first illumination area of an illumination beam and a second illumination area that provides a second illumination beam, the first illumination area corresponding to the first light adjustment area, and the second illumination area corresponding to the second light adjustment area , The first light adjustment area has a First light transmittance, the second light adjustment area has a second light transmittance, and the brightness of the first illumination beam is greater than the brightness of the second illumination beam, and the first light transmittance is less than the first light transmittance 2. Light transmittance. A method for manufacturing a light source module includes: obtaining a plurality of brightness distribution values corresponding to a plurality of illumination areas of a surface light source, wherein the surface light source provides a plurality of illumination light beams through the illumination areas, and at least part of the illumination areas The brightness distribution values are different from each other; a first cured colloid of a light adjustment element is cured to precipitate a plurality of light adjustment unit cells, wherein each of the light adjustment unit cells has a plurality of liquid crystal molecules, and the light adjustment unit cells are respectively Are distributed in a plurality of light adjustment regions; based on the brightness distribution values, obtain a specific light transmittance of each of the light adjustment regions corresponding to each of the illumination regions; and make the liquid crystals of the light adjustment cells The molecules maintain a specific arrangement state, so that each of the light adjustment regions has the specific light transmittance in the absence of an applied voltage, and at least part of the specific light transmittances of the light adjustment regions are mutually different. The difference is that the light adjustment element is located on the transmission path of the illumination light beams, and the illumination light beams provided by the illumination areas respectively pass through the corresponding light adjustment areas and then leave the light source module. A method for manufacturing a light source module includes: obtaining a plurality of brightness distribution values corresponding to a plurality of illumination areas of a surface light source, wherein the surface light source provides a plurality of illumination light beams through the illumination areas, and at least part of the illumination areas Some brightness distribution values are different from each other; A first cured colloid of a light adjustment element is cured to precipitate a plurality of light adjustment unit cells, wherein each of the light adjustment unit cells has a plurality of liquid crystal molecules, and the light adjustment unit cells are respectively distributed in a plurality of light adjustment regions In; Based on the brightness distribution values, obtain a specific light transmittance of each of the light adjustment regions corresponding to each of the illumination areas; and make the liquid crystal molecules of the light adjustment cells maintain a specific arrangement state , So that each of the light adjustment regions has the specific light transmittance fixedly, and the specific light transmittances of at least part of the light adjustment regions are different from each other, and the light adjustment element is located in the transmission path of the illumination beams And the illumination light beams provided by the illumination areas respectively pass through the corresponding light adjustment areas and then leave the light source module, wherein the light adjustment areas include a first light adjustment area and a second light adjustment area , The illumination areas include a first illumination area that provides a first illumination beam and a second illumination area that provides a second illumination beam, the first illumination area corresponds to the first light adjustment area, and the second illumination The area corresponds to the second light adjustment area, the first light adjustment area has a first light transmittance, the second light adjustment area has a second light transmittance, and the brightness of the first illumination beam is greater than the The brightness of the second illumination beam, and the first light transmittance is less than the second light transmittance. According to the method for manufacturing the light source module described in claim 21, the light adjustment element further includes a second cured colloid, the second curable colloid is located in the light adjustment unit cells, and makes the light adjustment The method for maintaining the specific arrangement state of the liquid crystal molecules of the unit cell includes: providing two electrode plates, wherein the light adjustment element is located between the two electrode plates, and the At least one of the two electrode plates has a plurality of voltage application areas, and the voltage application areas correspond to the light adjustment areas; based on the specific light transmittance distribution values of the light adjustment areas, each of the light adjustment areas is calculated. An applied voltage value of some applied voltage regions, wherein the applied voltage values of at least some of the applied voltage regions are different from each other; based on the applied voltage values, the two electrode plates are made to correspond to the light adjustment elements. Voltage is applied to the adjustment area; and the second cured colloid is cured so that the liquid crystal molecules of the light adjustment unit cells maintain the specific arrangement state. According to the method of manufacturing the light source module described in item 21 of the scope of patent application, the liquid crystal molecules are reactive liquid crystal molecules, and the method for maintaining the liquid crystal molecules of the light adjusting unit cells in the specific arrangement state includes : Provide two electrode plates, wherein the light adjustment element is located between the two electrode plates, at least one of the two electrode plates has a plurality of voltage application areas, and the voltage application areas correspond to the light adjustment areas; The specific light transmittance distribution value of each of the light adjustment regions is calculated, and an applied voltage value of each of the applied voltage regions is calculated, wherein the applied voltage values of at least some of the applied voltage regions are different from each other; based on the Applying a voltage value to cause the two electrode plates to apply voltage to the corresponding light-adjusting regions in the light-adjusting element; and curing the liquid crystal molecules so that the liquid crystal molecules of the light-adjusting cells maintain the specific arrangement status. A display device includes: a light source module, including: a light adjustment element having a plurality of light adjustment regions, and the light adjustment element includes: a first cured colloid; and a plurality of light adjustment unit cells located in the first In the cured colloid, each of the light-adjusting unit cells has a plurality of liquid crystal molecules, wherein the light-adjusting unit cells are respectively distributed in the light-adjusting regions, and the liquid crystal molecules of each of the light-adjusting unit cells maintain a specific The arrangement state of each of the light adjustment areas is fixed to have a specific light transmittance without an applied voltage, and the specific light transmittances of at least some of the light adjustment areas are different from each other; and The light source has a plurality of illuminating areas, wherein the surface light source provides a plurality of illuminating light beams through the illuminating areas, and the brightness of the illuminating light beams provided by at least part of the illuminating areas are different from each other. The light adjusting element is located in the illuminating areas. On the transmission path of the light beam, and the illuminating light beams provided by the illuminating areas respectively pass through the corresponding light adjustment areas and then leave the light source module; and a display panel located on the light source modules from the light source module. The transmission path of the illuminating light beam is suitable for adjusting the brightness of each of the illuminating light beams from each of the illuminating areas. A manufacturing method of a display device includes: Obtain a plurality of brightness distribution values corresponding to a plurality of illumination areas of a surface light source of a light source module, wherein the surface light source provides a plurality of illumination light beams through the illumination areas, and at least part of the brightness distribution values of the illumination areas are mutually different Different; curing a first curing colloid of a light adjusting element to precipitate a plurality of light adjusting unit cells, wherein each of the light adjusting unit cells has a plurality of liquid crystal molecules, and the light adjusting unit cells are respectively distributed in a plurality of light In the adjustment area; based on the brightness distribution values, obtain a specific light transmittance of each of the light adjustment areas corresponding to each of the illumination areas; make the liquid crystal molecules of the light adjustment cells maintain a specific arrangement State so that each of the light adjustment regions has the specific light transmittance without applying voltage, and the specific light transmittances of at least part of the light adjustment regions are different from each other, wherein the light adjustment The components are located on the transmission paths of the illumination light beams, and the illumination light beams provided by the illumination areas respectively pass through the corresponding light adjustment areas and then leave the light source module; and adjust the light source modules separately through a display panel. The brightness of each of the illumination beams in the illumination areas.

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