CN110197627B - Display substrate, display panel and driving method of display panel - Google Patents
Display substrate, display panel and driving method of display panel Download PDFInfo
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- CN110197627B CN110197627B CN201910464110.6A CN201910464110A CN110197627B CN 110197627 B CN110197627 B CN 110197627B CN 201910464110 A CN201910464110 A CN 201910464110A CN 110197627 B CN110197627 B CN 110197627B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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Abstract
The invention provides a display substrate, a display panel and a driving method of the display panel. The display substrate comprises a substrate base plate and a plurality of sub-pixels located on the substrate base plate, a plurality of light-transmitting areas are arranged on the substrate base plate, orthographic projections of the light-transmitting areas on the display substrate are not overlapped with orthographic projections of the sub-pixels on the display substrate, and the light-transmitting areas are used for increasing the brightness of the light-emitting side of the display substrate. According to the display substrate provided by the embodiment of the invention, the light-transmitting area is arranged, so that light from the side of the display substrate without the sub-pixels can be transmitted to the side provided with the sub-pixels, namely the light-emitting side of the display substrate, through the light-transmitting area. Under the condition that external light is strong, the display brightness of the display substrate can be improved, the service life of the display panel is prolonged, and meanwhile the power consumption of the display panel is reduced.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display substrate, a display panel and a driving method of the display panel.
Background
The micro LED (micro light emitting diode) display panel has the advantages of high brightness, long service life, high contrast, short reaction time, low energy consumption, large visual angle, simple structure, small volume, high resolution and the like, and has wide development prospect. However, in the case of strong external light, in order to ensure the display effect, the display brightness of the display panel needs to be increased, which may increase the power consumption of the display panel and may adversely affect the service life of the display panel.
Disclosure of Invention
The embodiment of the invention provides a display substrate, a display panel and a driving method of the display panel, and aims to solve the problem that the service life and power consumption of the display panel are possibly influenced by the fact that the display brightness needs to be increased under the condition that the external light of the conventional display substrate is strong.
In a first aspect, an embodiment of the present invention provides a display substrate, including a substrate and a plurality of sub-pixels located on the substrate, where the substrate is provided with a plurality of light-transmitting regions, and an orthogonal projection of each light-transmitting region on the display substrate is not overlapped with an orthogonal projection of the plurality of sub-pixels on the display substrate, and the light-transmitting regions are used to increase brightness of a light-emitting side of the display substrate.
Optionally, the display device further comprises a light shielding film, the substrate base plate is a transparent base plate, the light shielding film is located on one side of the substrate base plate, which is far away from the sub-pixels, a plurality of through holes are formed in the light shielding film, and the light transmitting area is formed in an area of the substrate base plate corresponding to the through holes.
Optionally, the plurality of sub-pixels are arranged in an array, and the light-transmitting regions are located at top corners of the sub-pixels.
In a second aspect, an embodiment of the present invention further provides a display panel, including the display substrate described in any one of the above.
Optionally, the display device further comprises a light-transmitting back plate and a scattering film, wherein the light-transmitting back plate is located on the backlight side of the display substrate, and the scattering film is located between the light-transmitting back plate and the display substrate.
Optionally, the light-transmitting backplane includes a one-way light-transmitting film, and a light-transmitting direction of the one-way light-transmitting film is from a side of the light-transmitting backplane far away from the display substrate to a side of the light-transmitting backplane close to the display substrate.
Optionally, the display device further comprises a brightness sensor and a light transmission control layer, wherein the brightness sensor is located between the light transmission back plate and the display substrate, the brightness sensor is electrically connected with the light transmission control layer, the light transmission control layer is located between the light transmission back plate and the display substrate, the light transmission control layer is arranged corresponding to each light transmission area, and the light transmission control layer is configured to be in a light transmission state when a brightness value detected by the brightness sensor is greater than a preset threshold value.
Optionally, the light transmission control layer is a liquid crystal layer.
In a third aspect, an embodiment of the present invention provides a driving method of a display panel, which is applied to the display panel including the luminance sensor, and includes the following steps:
and when the brightness value detected by the brightness sensor is greater than a preset threshold value, controlling the light transmission control layer to be switched to a light transmission state.
Optionally, when the brightness value detected by the brightness sensor is greater than a preset threshold, controlling the light transmission control layer to switch to a light-transmittable state includes:
and controlling the light transmission degree of the light transmission control layer to increase along with the increase of the brightness value detected by the brightness sensor under the condition that the brightness value detected by the brightness sensor is greater than a preset threshold value.
According to the display substrate provided by the embodiment of the invention, the light-transmitting area is arranged, so that light from the side of the display substrate without the sub-pixels can be transmitted to the side provided with the sub-pixels, namely the light-emitting side of the display substrate, through the light-transmitting area. Under the condition that external light is strong, the display brightness of the display substrate can be improved, the service life of the display panel is prolonged, and meanwhile the power consumption of the display panel is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a display substrate according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 3 is a schematic view of a unidirectional light transmitting film in an embodiment of the present invention;
FIG. 4 is a flow chart of a driving method of a display panel according to the present invention;
fig. 5 is another flowchart of the driving method of the display panel according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a display substrate.
As shown in fig. 1 and fig. 2, the display substrate includes a substrate 110 and a display layer 120 disposed on the substrate 110, the display layer 120 includes a plurality of sub-pixels 121 and other structural or functional film layers for implementing display functions, and reference may be made to the existing and improved display substrate, which is not further limited and described herein.
The substrate 110 is provided with a plurality of light-transmitting regions 130, and an orthographic projection of each light-transmitting region 130 on the display substrate does not coincide with an orthographic projection of the plurality of sub-pixels 121 on the display substrate, that is, there is no place where each light-transmitting region 130 and each sub-pixel 121 coincide in a direction perpendicular to the display substrate, it can be understood that there is a certain interval between the sub-pixels 121, and the light-transmitting regions 130 are distributed in the intervals.
The light-transmitting area 130 is used for increasing the light-emitting brightness of the light-emitting side of the display substrate, and in the using process, external light can pass through the light-transmitting area 130 from one side (or called backlight side of the display substrate) of the display substrate far away from each sub-pixel 121 and is transmitted to one side (or called light-emitting side of the display substrate) provided with the sub-pixel 121, so that the display brightness of the display substrate is increased.
The display substrate of the embodiment of the invention, by providing the light-transmitting region 130, enables light from a side of the display substrate away from the sub-pixel 121 to be transmitted to a side provided with the sub-pixel 121 through the light-transmitting region 130. Under the condition that the external light is strong, the light-emitting brightness of the display substrate can be improved, which is equivalent to that under the condition that the display brightness of each sub-pixel 121 is not changed, the actual display brightness of the display substrate is improved, the service life of the display panel is prolonged, and meanwhile, the power consumption of the display panel is reduced.
In an alternative embodiment, the transparent region 130 may be formed by forming a via hole through the display substrate.
In another alternative embodiment, as shown in fig. 2, the substrate 110 is a transparent substrate 111, and a light shielding film 112 is disposed, the light shielding film 112 is disposed on a side of the transparent substrate 11 away from the sub-pixels 121, and a plurality of through holes are disposed on the light shielding film 112, such that each through hole is located at a position forming a light-transmitting region 130, and the rest of the through holes actually form a non-light-transmitting region due to the light shielding film 112.
In the above embodiment, when the wires are arranged, the positions of the wires can be reasonably adjusted to prevent the wires from shielding the light-transmitting area 130, and obviously, the light-transmitting effect of the light-transmitting area 130 can be prevented from being affected by selecting the transparent wire.
The transparent substrate 111 and the light shielding film 112 cooperate with each other to facilitate the manufacturing process and reduce the possibility of damage to the display substrate due to the holes.
Optionally, the plurality of sub-pixels 121 are arranged in an array, and the light-transmitting regions 130 are located at top corners of the sub-pixels 121.
As shown in fig. 1, in one embodiment, the sub-pixels 121 in the display substrate include three sub-pixels, namely, a red sub-pixel (R)121A, a green sub-pixel (G)121B, and a blue sub-pixel (B)121C, and the sub-pixels 121 including the three sub-pixels are arranged in an array.
Referring to fig. 2, the light-transmitting region 130 at the middle portion is specifically located between four adjacent sub-pixels 121, and the light-transmitting region 130 at the edge is located at the top corner of one or two sub-pixels 121.
By controlling the position of each transparent region 130 at the vertex of each pixel, it is beneficial to make the light distribution of the display substrate more uniform, i.e. to make the brightness distribution of the display substrate more uniform.
The embodiment of the invention also provides a display panel which comprises the display substrate.
The display panel of the embodiment can be applied to various electronic devices, and specifically may include but is not limited to at least one of a mobile phone, a tablet computer, an e-book reader, an MP3 player, an MP4 player, a digital camera, a laptop portable computer, a vehicle-mounted computer, a desktop computer, a set-top box, a smart television, and a wearable device. Since the technical solution of this embodiment includes all technical solutions of the above embodiments, at least all technical effects can be achieved, and details are not described here.
Optionally, the display panel further comprises a light transmissive back plate 140 and a scattering film 150.
The light-transmissive back plate 140 is disposed on the backlight side of the display substrate, such that external light can reach the backlight side of the display substrate through the light-transmissive back plate 140 and further reach the light-emitting side of the display substrate, i.e. the side of the display substrate where the sub-pixels 121 are disposed, through each light-transmissive region 130 of the display substrate.
As shown in fig. 2, an arrow in fig. 2 indicates the distribution of light, the light distribution passing through the light-transmitting back plate 140 may be uneven, which may cause local over-brightness or local over-brightness, the scattering film 150 is located between the light-transmitting back plate 140 and the display substrate, and the scattering film 150 is used for scattering light, so that when external light is transmitted to the display substrate, the distribution is relatively uniform, which can reduce the possibility of local over-brightness or local over-brightness of the display substrate.
Optionally, the light-transmissive back plate 140 includes a one-way light-transmissive film 141, and a light-transmissive direction of the one-way light-transmissive film 141 is from a side of the light-transmissive back plate 140 away from the display substrate to a side close to the display substrate.
As shown in fig. 3, the light-transmissive back plate 140 is configured as a one-way light-transmissive film 141, where the left side of the one-way light-transmissive film 141 in fig. 3 represents a side close to the display substrate, the right side represents a side far from the display substrate, an upper arrow represents light emitted from the display substrate, the light cannot pass through the one-way light-transmissive film 141, and a lower arrow represents natural light or light from the outside, and the light can pass through the one-way light-transmissive film 141. Through setting up one-way printing opacity membrane 141, the light that can avoid display panel to send is seen through by printing opacity backplate 140 to avoid display panel's the loss of display brightness, be favorable to guaranteeing display panel's display effect.
Optionally, the display device further includes a brightness sensor 160 and a light transmission control layer 170, the brightness sensor 160 is located between the light transmission back plate 140 and the display substrate, the brightness sensor 160 is electrically connected to the light transmission control layer 170, the light transmission control layer 170 is located between the light transmission back plate 140 and the display substrate, the light transmission control layer 170 is disposed corresponding to each light transmission region 130, and the light transmission control layer 170 is configured to be in a light-permeable state when a brightness value detected by the brightness sensor 160 is greater than a preset threshold value.
In the case that the brightness of the use environment of the display panel is low, the display effect of the display panel is relatively good, in this case, the influence of the external brightness on the display panel is relatively small, and only in the case that the brightness of the use environment is high, the identification degree of each pixel on the display panel is reduced, which can result in that the content displayed by the display panel cannot be clearly observed.
The brightness sensor 160 is located between the light-transmitting back plate 140 and the display substrate, and since the brightness of the external environment is higher, the brightness of the light projected through the light-transmitting back plate 140 is higher, and the brightness detected by the brightness sensor 160 is higher, the detection result of the brightness sensor 160 can reflect the brightness of the use environment of the display panel.
The light transmission control layer 170 is configured such that when the brightness value detected by the brightness sensor 160 is greater than the preset threshold, the light transmission control layer 170 is in a light-transmittable state, that is, when the brightness of the external environment is relatively high, each light transmission control layer 170 allows light to transmit therethrough, at this time, the external light can sequentially transmit to the light-emitting side of the display substrate through the light-transmitting back plate 140, the light transmission control layer 170 and the light-transmitting area 130 of the display substrate, so that the light-emitting brightness of the display substrate can be increased, which is equivalent to increasing the actual display brightness of the display panel.
Optionally, the light transmission control layer 170 is a liquid crystal layer.
The control of the light transmission degree of the liquid crystal layer can be realized by controlling the deflection degree of the liquid crystal molecules in the liquid crystal layer, and the conventional liquid crystal control method can be specifically referred to, and the principle of the liquid crystal control method is not described in detail herein. By arranging the liquid crystal layer as the light transmission control layer 170, the light transmission degree of the liquid crystal layer can be controlled according to requirements, so that the adjustment of the light emitting brightness of the display panel is realized.
The present invention further provides a driving method of a display panel, which is applied to the display panel including the luminance sensor and the light transmission control layer, as shown in fig. 4, the driving method of the display panel includes the following steps:
step 401: and when the brightness value detected by the brightness sensor is greater than a preset threshold value, controlling the light transmission control layer to be switched to a light transmission state.
In this embodiment, the preset threshold of the brightness value is set according to the requirement, when the brightness of the external environment is relatively low, the light transmission control layer is in the opaque state, and the driving method of the display panel can refer to the existing display panel, which is not further limited and described herein.
When external environment brightness is larger than the preset threshold value, the light transmission control layer is controlled to be switched to the light-permeable state, and light emitting brightness of the display panel can be enhanced through natural light.
In one embodiment, a photo resistor is selected as the brightness sensor, and a constant current or a constant voltage is applied across the photo resistor, as shown in fig. 5, when the resistance value of the photo resistor changes due to the brightness change of the natural light or external light, the voltage data and the current data of the photo resistor change accordingly. For example, when the current is constant, if the resistance increases, the voltage across it will increase.
Obviously, other components can be selected as the brightness sensor in the implementation, such as a luminance meter or an image sensor, and the measurement of the brightness can also be realized.
This voltage or current change is an analog signal which, if necessary, is converted to a digital signal recognizable by the control circuit (TCON IC) as the case may be. When the control circuit receives the voltage data or the current data change of the photoresistor, whether the brightness needs to be adjusted is judged according to the ambient light intensity.
When the brightness of the external environment is low, the display substrate can realize a better display effect, and only when the brightness of the external environment is high, the brightness of each pixel of the display panel is relatively low with the external environment, so that the display panel is not easy to identify and the display effect is generated. Therefore, in this embodiment, whether the external light intensity meets the requirement of adjusting the brightness is further determined by the control circuit according to the signal transmitted by the brightness sensor, if the detected external brightness is low, the adjustment is not needed, and at this time, it is not needed to transmit data to the driving circuit (source IC) and wait for the next data input of the photoresistor.
If the detected external brightness is relatively high, the light-emitting brightness of the display panel needs to be increased, and at the moment, whether the brightness needs to be adjusted through the light-transmitting area is judged. Specifically, when the display panel used is a display panel including three color sub-pixels of RGB, it is equivalent to determining whether to enter the RGBW mode.
If the RGBW mode is required, that is, the light-transmitting region is used as the white pixel (W), the adjustment of the light-transmitting degree of the light-transmitting region is equivalent to the adjustment of the brightness of the white pixel.
The control circuit outputs a signal for controlling the brightness and sends the signal to the driving circuit, the signal comprises the brightness required to be displayed by the white light pixel, and the driving circuit controls the opening degree of the liquid crystal layer to enable the light transmission degree of the liquid crystal layer to reach the required white light brightness, namely the adjustment of the display brightness is completed.
In general, natural light in the environment of use can be regarded as white light, that is, the display panel provided with the light transmission region is equivalent to adding one white light pixel (W), and controlling the light transmission degree of the light transmission control layer is equivalent to controlling the brightness of the white light pixel. Taking the display panel in which the sub-pixels include sub-pixels of three colors of red (R), green (G), and blue (B) as an example, the display effect of the RGBW display panel can be realized only by providing three pixels of RGB.
Optionally, when the brightness value detected by the brightness sensor is greater than a preset threshold, controlling the light transmission control layer to switch to a light-transmittable state includes:
and controlling the light transmission degree of the light transmission control layer to increase along with the increase of the brightness value detected by the brightness sensor under the condition that the brightness value detected by the brightness sensor is greater than a preset threshold value.
Under the condition that the external environment brightness is higher, the display brightness of the display panel needs to be correspondingly improved to ensure the display effect, so that the light transmission degree of the light transmission control layer in the embodiment is increased along with the increase of the brightness value detected by the brightness sensor to ensure that the display panel has a better display effect.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A display substrate is characterized by comprising a substrate base plate and a plurality of sub-pixels positioned on the substrate base plate, wherein a plurality of light-transmitting areas are arranged on the substrate base plate, the orthographic projection of each light-transmitting area on the display substrate is not overlapped with the orthographic projection of the sub-pixels on the display substrate, and the light-transmitting areas are used for increasing the brightness of the light-emitting side of the display substrate;
the display substrate further comprises a shading film, the substrate is a transparent substrate, the shading film is located on one side, away from the sub-pixels, of the substrate, a plurality of through holes are formed in the shading film, and the light transmitting area is formed in the area, corresponding to the through holes, of the substrate.
2. The display substrate of claim 1, wherein a plurality of the sub-pixels are arranged in an array, and the light-transmissive regions are located between top corners of the sub-pixels.
3. A display panel comprising the display substrate according to any one of claims 1 to 2.
4. The display panel of claim 3, further comprising a light transmissive backplane located on a backlight side of the display substrate and a diffuser film located between the light transmissive backplane and the display substrate.
5. The display panel of claim 4, wherein the light transmissive backplane comprises a unidirectional light transmissive film, and wherein the unidirectional light transmissive film allows light transmission from a side of the light transmissive backplane away from the display substrate to a side of the light transmissive backplane adjacent to the display substrate.
6. The display panel according to any one of claims 4 to 5, further comprising a brightness sensor and a light transmission control layer, wherein the brightness sensor is located between the light transmission back plate and the display substrate, and the brightness sensor is electrically connected to the light transmission control layer, the light transmission control layer is located between the light transmission back plate and the display substrate, and the light transmission control layer is disposed corresponding to each of the light transmission regions, and the light transmission control layer is configured to be in a light transmission state when a brightness value detected by the brightness sensor is greater than a preset threshold value.
7. The display panel according to claim 6, wherein the light transmission control layer is a liquid crystal layer.
8. A driving method of a display panel applied to the display panel according to claim 6, comprising the steps of:
and when the brightness value detected by the brightness sensor is greater than a preset threshold value, controlling the light transmission control layer to be switched to a light transmission state.
9. The method for driving a display panel according to claim 8, wherein the controlling the light transmission control layer to switch to the light transmission state when the brightness value detected by the brightness sensor is greater than a predetermined threshold value comprises:
and controlling the light transmission degree of the light transmission control layer to increase along with the increase of the brightness value detected by the brightness sensor under the condition that the brightness value detected by the brightness sensor is greater than a preset threshold value.
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| CN201910464110.6A CN110197627B (en) | 2019-05-30 | 2019-05-30 | Display substrate, display panel and driving method of display panel |
| PCT/CN2020/082059 WO2020238387A1 (en) | 2019-05-30 | 2020-03-30 | Display substrate, display panel and driving method for display panel |
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| CN201910464110.6A CN110197627B (en) | 2019-05-30 | 2019-05-30 | Display substrate, display panel and driving method of display panel |
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| CN110197627A (en) | 2019-09-03 |
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