TW202107186A - Display panel module - Google Patents

Abstract

A display panel module is provided. The display panel module includes a first substrate, a pixel electrode layer, a plurality of protecting pads, a plurality of spacers, and a second substrate. The pixel electrode layer is disposed on a first top face of the first substrate and includes a plurality of thin film transistors. The plurality of protecting pads are disposed on the pixel electrode layer. Each protecting pad has respectively a protecting pad length and a protecting pad width in a first direction and a second direction perpendicular to the first direction, wherein one side of each protecting pad opposite to the first substrate is substantially flat. Each spacer has a contacting area and is disposed on one of the protecting pad for making the contacting area contact the protecting pad. The contacting area has respectively a contacting length and a contacting width in the first direction and the second direction, wherein the protecting pad length and the protecting pad width are respectively larger than the contacting length and the contacting width. The second substrate is disposed opposite to the first substrate. The spacer is disposed on the second substrate for contacting the protecting pad. The bending quantity of the display panel module in the first direction is greater than that in the second direction, and the protecting pad length is larger than the protecting pad width.

Description

Panel module

The present invention relates to a panel module; specifically, the present invention relates to a panel module for a curved display device.

With the development of display technology, in addition to improvements in size and image quality, the appearance of display devices has also changed, such as curved display devices. Compared with a flat display device, a curved display device can not only be made into a larger size under the same width, but the curved display device can also provide a better viewing effect. For example, the TV screen can be made recessed, so when the user is watching TV, the distance between the eyes and the screen will be smaller than that of a flat-screen TV. Each part of the TV and the line of sight of the eyes are also at right angles or close to each other. The best viewing angle at right angles.

After the panel module of the conventional display device is bent, the spacer located above the thin film transistor is likely to leave the original position, that is, misalignment occurs. This misalignment easily causes the distance between the pixel electrode layer and the second substrate to change, resulting in uneven brightness of the panel module. In addition, the spacer rubs against the alignment layer when misalignment occurs, which may cause broken bright spots. It can be seen from the above description that the structure of the panel module of the existing curved display device still needs to be improved.

One of the objectives of the present invention is to provide a panel module, which can reduce uneven brightness during bending.

One of the objectives of the present invention is to provide a panel module that can reduce the occurrence of broken bright spots during bending.

The panel module of the present invention includes a first substrate, a pixel electrode layer, a plurality of protection pads, a plurality of spacers, and a second substrate. The first substrate has a first top surface. The pixel electrode layer is arranged on the first top surface and includes a plurality of thin film transistors. A plurality of protection pads are arranged on the pixel electrode layer. Each protection pad has a protection pad length and a protection pad width in a first direction and a second direction perpendicular to the first direction, and the side of each protection pad facing away from the first substrate is substantially flat, where the first direction and The second direction is substantially parallel to the first top surface. Each spacer has a contact area, and each spacer is disposed on one of the protection pads so that the contact area is in contact with the protection pad. The contact area has a contact length and a contact width in the first direction and the second direction, respectively, and the protection pad length and the protection pad width are respectively greater than the contact length and the contact width. The second substrate is disposed opposite to the first substrate, and the spacer is disposed on the second substrate to be in contact with the protection pad. The bending amount of the panel module in the first direction is greater than the bending amount in the second direction, and the length of the protection pad is greater than the width of the protection pad.

Hereinafter, specific specific embodiments and drawings are used to illustrate the implementation of the connection assembly disclosed in the present invention. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. However, the content disclosed below is not intended to limit the protection scope of the present invention. Without departing from the spirit of the present invention, those skilled in the art can implement the present invention in other different embodiments based on different viewpoints and applications. In the drawings, the thickness of layers, films, panels, regions, etc., are exaggerated for clarity. Throughout the specification, the same reference numerals denote the same elements. It should be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element, or Intermediate elements can also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements. As used herein, "connection" can refer to physical and/or electrical connection. Furthermore, "electrical connection" or "coupling" can mean that there are other elements between the two elements.

It should be understood that although the terms "first", "second", "third", etc. may be used herein to describe various elements, components, regions, layers, and/or portions, these elements, components, regions, and/or Or part should not be restricted by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Therefore, the “first element”, “component”, “region”, “layer” or “portion” discussed below may be referred to as a second element, component, region, layer or portion without departing from the teachings herein.

In addition, relative terms such as "lower" or "bottom" and "upper" or "top" can be used herein to describe the relationship between one element and another element, as shown in the figure. It should be understood that relative terms are intended to include different orientations of the device in addition to the orientation shown in the figures. For example, if the device in one figure is turned over, elements described as being on the "lower" side of other elements will be oriented on the "upper" side of the other elements. Therefore, the exemplary term "lower" may include an orientation of "lower" and "upper," depending on the specific orientation of the drawing. Similarly, if the device in one figure is turned over, elements described as "below" or "below" other elements will be oriented "above" the other elements. Thus, the exemplary terms "below" or "below" can include an orientation of above and below.

As used herein, "approximately", "approximately", or "substantially" includes the stated value and the average value within the acceptable deviation range of the specific value determined by a person of ordinary skill in the art, taking into account the measurement in question and the A certain amount of measurement-related error (ie, the limitation of the measurement system). For example, "about" can mean within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, ±5%. Furthermore, the "about", "approximate" or "substantially" used herein can select a more acceptable deviation range or standard deviation based on optical properties, etching properties or other properties, and not one standard deviation can be applied to all properties .

The present invention provides a panel module, which can preferably be applied to a display device. The present invention also provides a display device using the above-mentioned panel module, which preferably includes a non-autonomous display panel such as a liquid crystal display panel; and is preferably applicable to computer monitors, televisions, monitors, and car hosts. In addition, the display device can also be applied to other electronic devices, for example, as a display screen of a mobile phone, a digital camera, a handheld game instrument, and the like. The above is just an example, but it is not limited to this.

FIG. 1 is a schematic top view of a panel module 910 of the present invention before being bent along a first direction 701, and FIG. 2 is a schematic cross-sectional view taken along the line A'A in FIG. The panel module 910 of the present invention includes a first substrate 100, a pixel electrode layer 200, a plurality of protection pads 300, a plurality of spacers 400, and a second substrate 500. Among them, after the panel module 910 is bent, the bending amount of the panel module 910 in the first direction 701 is preferably greater than the bending amount in the second direction 702. In other words, the degree of bending of the panel module 910 along the first direction 701 with the second direction 702 as the axis is greater than the degree of bending along the second direction 702 with the first direction 701 as the axis. On the other hand, for ease of description, FIG. 1 has omitted elements such as the second substrate 500, the light shielding tape 510, the color resist 520, the protective layer 540, the alignment layer 710, the alignment layer 720, the gate insulating layer 221, and the first substrate 100. . In the figure, one protection pad 300 and one spacer 400 are taken as an example. As shown in FIG. 2, the first substrate 100 has a first top surface 101. The pixel electrode layer 200 is disposed on the first top surface 101 and includes a plurality of thin film transistors 201. The thin film transistor 201 includes a channel layer 210, a source electrode 211, a drain electrode 212, and a gate electrode 213. For ease of description, the thin film transistor 201 in the figure is taken as an example. On the other hand, the pixel electrode layer 200 preferably further includes a pixel electrode 230 located beside the thin film transistor 201 and coupled to the thin film transistor 201, and a planarization layer 240 covering the thin film transistor 201 and the pixel electrode 220. The pixel electrode 230 may be, for example, an indium tin oxide layer. Furthermore, in a preferred embodiment, the pixel electrode layer 200 includes a plurality of data lines 250 extending along the first direction 701 (see FIG. 1) and a plurality of gate lines 220 extending along the second direction 702, wherein Each thin film transistor 201 is correspondingly disposed at the intersection of one of the data lines 250 and one of the gate lines 220, and is respectively coupled to one of the adjacent data lines 250 and one of the gate lines 220. Each pixel electrode 230 is between two adjacent data lines 250 and two adjacent gate lines 220, and each pixel electrode 230 is electrically connected to the drain electrode 212 of the thin film transistor 201.

In one embodiment, as shown in FIG. 2, a plurality of protection pads 300 are disposed on the pixel electrode layer 200, and the vertical projection range of each protection pad 300 on the first top surface 101 can be within one of the thin film transistors 201 A vertical projection range on the first top surface 101 is partially overlapped. In other words, the vertical projection range of each protection pad 300 on the top surface 101 of the first substrate covers the vertical projection range of one of the plurality of thin film transistors 201 on the top surface 101 of the first substrate. The side 301 of each protection pad 300 facing away from the first substrate 100 is substantially flat. The first direction 701 and the second direction 702 are substantially parallel to the first top surface 101. The material of the protective pad 300 can be selected from metals, alloys, silicon oxide, nitrogen oxide, silicon nitride oxide, indium tin oxide (ITO), indium zinc oxide (IZO) or organic materials. When the protection pad 300 is made of a metal material, in order to avoid excessive parasitic capacitance with the data line 250, the protection pad 300 will not be located in the center of the data line 250 and will be slightly sideways.

As shown in FIG. 2, each spacer 400 has a contact area 410, and each spacer 400 is disposed on one of the protection pads 300 to make the contact area 410 and the protection pad 300 contact. The second substrate 500 is disposed opposite to the first substrate 100, and the spacer 400 is disposed on the second substrate 500 to be in contact with the protection pad 300. Among them, the spacer 400 is, for example, a columnar structure with a narrow bottom and a wide top. The spacer 400 has a contact area 410 contacting the protection pad 300 and a configuration area 420 disposed on the second substrate 500. More specifically, in a preferred embodiment, the side of the second substrate 500 facing the first substrate 100 may be provided with a light-shielding band 510, a color resist 520, and a protective layer 540 in order from close to far. In one embodiment, the spacer 400 is actually arranged on the side of the protective layer 540 facing the first substrate 100 in the arrangement area 420. The surfaces of the protective pad 300 and the spacer 400 are respectively covered by the alignment layers 710 and 720, and the contact area 410 is actually in contact with the protective pad 300 via the alignment layers 710 and 720. The surface of the planarization layer 240 may also be provided with a general electrode 730. In one embodiment, a part of the general electrode 730 may be covered by the protective pad 300, and a part of the general electrode 730 may be covered by the alignment layer 710. In addition, in order to make the drawing more concise, only a part of the universal electrode 730 is shown, but not all of it.

_{As shown in FIG. 1, each protection pad 300 has a protection pad length L 300} and a protection pad width W ₃₀₀ in a first direction 701 and a second direction 702 perpendicular to the first direction 701, respectively. _{The contact area 410 has a contact length L 410} and a contact width W ₄₁₀ in the first direction 701 and the second direction 702 respectively, and the protection pad length L ₃₀₀ and the protection pad width W ₃₀₀ are respectively greater than the contact length L ₄₁₀ and the contact width W ₄₁₀ . In a preferred embodiment, the protection pad length L _{300 is,} for example, 2 to 4 times the contact length and contact length L ₄₁₀ , and the protection pad width W _{300 is,} for example, 2 to 4 times the contact width W _410.

3 is a schematic top view of the panel module 910 of the present invention after being bent along the first direction 701, and FIG. 4 is a schematic cross-sectional view taken along the line A'A in FIG. 3, in which the bending amount of the panel module 910 in the first direction 701 is greater than For the amount of bending in the second direction 702, the protection pad length L300 is greater than the protection pad width W300. When the panel module 910 is bent, the vertical projection range of the contact area 410 of each spacer 400 on the first top surface 101 is covered by the vertical projection range of the protection pad 300 on the first top surface 101. More specifically, when the panel module 910 of the present invention is bent, although the spacer 400 leaves the original position, that is, misalignment occurs, because the protection pad length L ₃₀₀ and the protection pad width W ₃₀₀ are respectively greater than the contact length L ₄₁₀ And the contact width W ₄₁₀ , so the contact area 410 of the spacer 400 is still in contact with the protection pad 300. In this way, the distance between the pixel electrode layer 200 and the second substrate 500 will not change too much due to bending, and will not cause uneven brightness of the panel module. On the other hand, it can also reduce the probability that the spacer 400 rubs against the visible area or the portion adjacent to the visible area to distribute to the layer 710, which affects the alignment and causes broken bright spots.

5 is a schematic top view of a panel module 920 before bending along the first direction 701 according to another embodiment of the present invention, and FIG. 6 is a schematic cross-sectional view taken along the line B'B in FIG. 5. As shown in FIG. 5, the extending direction of each shading strip 510 is substantially parallel to the extending direction of the first direction 701. As shown in FIG. 6, the liquid crystal layer 600 is disposed between the pixel electrode layer 200 and the second substrate 500, and the light shielding band 510 is disposed between the liquid crystal layer 600 and the second substrate 500. More specifically, in a preferred embodiment, the side of the second substrate 500 facing the first substrate 100 is sequentially provided with a light shielding band 510, a color resist 520, and a protective layer 540, and the liquid crystal layer 600 It is substantially filled and arranged between the pixel electrode layer 200 and the protective layer 540.

As shown in FIG. 5, the vertical projection range of the light shielding strip 510 on the first top surface 101 (see FIG. 6) covers the vertical projection range of the data line 250 on the first top surface 101. Each shading band 510 includes a plurality of band portions 511 and a plurality of expansion portions 512 arranged between two adjacent band portions 511, and the vertical projection range of each expansion portion 512 on the first top surface 101 covers a plurality of The vertical projection range of one of the spacers 400 on the first top surface 101, the width W _{512 of each expansion portion 512 in the second direction 702 is greater than the width W 511 of} each belt portion 511 in the second direction 702 to ensure Effectively shield the light leakage caused by poor alignment near the spacer 400 due to the existence of the spacer 400. Each data line 250 has a data line width W ₂₅₀ in the second direction 702, and the width W _{511 of} each belt portion 511 in the second direction 702 is preferably 2 to 9 times the data line width W _{250. The width W 511 of} each belt portion 511 in the second direction is preferably between 14.5 and 25 μm.

As shown in FIG. 5, each protective pad 300 further includes an extension portion 310 extending along the first direction 701, and the vertical projection range of the extension portion 310 on the first top surface 101 (see FIG. 2) is covered by the shading bands 511 One of them is covered by the vertical projection range of the first top surface 101. Wherein, the width W _{310 of the} extension portion 310 is preferably approximately equal to the width W _{250 of the} data line. The extension portion 310 can extend the protective pad's range of efficacy and improve the efficacy without affecting the aperture ratio.

FIG. 7 is a schematic top view of a panel module 920 after being bent along the first direction 701 according to another embodiment of the present invention, and FIG. 8 is a schematic cross-sectional view taken along the line B'B in FIG. 7. When the panel module 910 of the present invention is bent, the spacer 400 leaves above the intersection of the data line 250 and the gate line 220, that is, a misalignment occurs and the alignment layers 710 and 720 rub. However, since the vertical projection range of the light shielding tape 510 on the first top surface 101 covers the vertical projection range of the spacer 400 on the first top surface 101, the friction of the alignment layers 710 and 720 can be shielded, so from the user's point of view , The condition of no broken bright spots is caused by the bending of the panel module 920.

In a different embodiment as shown in FIG. 9, the protection pad 300 can be formed together with the planarization layer 240. In other words, the planarization layer 240 has two heights, and the higher part forms the protective pad 300. Thereby, there is an advantage that the number of masks can be reduced.

The present invention has been described in the above-mentioned related embodiments, but the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, modifications and equivalent arrangements included in the spirit and scope of the patent application are all included in the scope of the present invention.

100: first substrate 101: first top surface 200: pixel electrode layer 201: thin film transistor 210: channel layer 211: source electrode 212: drain electrode 213: gate electrode 220: gate line 221: gate Insulation layer 230: pixel electrode 240: planarization layer 250: data line 300: protection pad 301: protection pad facing away from one side of the first substrate 310: extension 400: spacer 410: contact area 420: configuration area 500: the first Second substrate 510: light-shielding tape 511: belt portion 512: expansion portion 520: color resist 540: protective layer 600: liquid crystal layer 701: first direction 702: second direction 710: alignment layer 720: alignment layer 730: general electrode 910: Panel module 920: Panel module D ₁ : Pitch D ₂ : Pitch L ₃₀₀ : Protection pad length L ₄₁₀ : Contact length W ₂₅₀ : Data line width W ₃₀₀ : Protection pad width W ₃₁₀ : Extension width W ₄₁₀ : Contact _{Width W 511} : Width of the strap in the second direction W ₅₁₂ : Width of the expansion portion in the second direction

FIG. 1 is a schematic top view of the panel module of the present invention before being bent along a first direction.

2 is a schematic cross-sectional view of the panel module of the present invention before being bent along the first direction.

3 is a schematic top view of the panel module of the present invention after being bent along the first direction.

4 is a schematic cross-sectional view of the panel module of the present invention after being bent along the first direction.

5 is a schematic top view of another embodiment of the panel module of the present invention before being bent along the first direction.

6 is a schematic cross-sectional view of another embodiment of the panel module of the present invention before being bent along the first direction.

FIG. 7 is a schematic top view of another embodiment of the panel module of the present invention after being bent along the first direction.

8 is a schematic cross-sectional view of another embodiment of the panel module of the present invention after being bent along the first direction.

9 is a schematic cross-sectional view of another embodiment of the panel module of the present invention.

(no)

100: first substrate

101: The first top surface

200: Pixel electrode layer

201: Thin Film Transistor

210: Channel layer

211: Source electrode

212: Drain electrode

213: gate electrode

221: gate insulation layer

230: pixel electrode

240: Planarization layer

300: Protective pad

301: The protective pad faces one side of the first substrate

400: Spacer

410: contact area

420: configuration area

500: second substrate

510: shading tape

520: color resistance

540: protective layer

600: liquid crystal layer

701: first direction

710: Orientation layer

720: Orientation layer

730: Universal electrode

910: Panel Module

Claims (12)

A panel module, including: A first substrate having a first top surface; A pixel electrode layer disposed on the first top surface and including a plurality of thin film transistors; A plurality of protection pads are arranged on the pixel electrode layer, wherein each of the protection pads has a protection pad length and a protection pad width in a first direction and a second direction perpendicular to the first direction, and A side of each of the protection pads facing away from the first substrate is substantially a plane, wherein the first direction and the second direction are substantially parallel to the first top surface; A plurality of spacers, each spacer has a contact area, each spacer is disposed on one of the protection pads so that the contact area is in contact with the protection pad, and the contact area is respectively on the first The direction and the second direction have a contact length and a contact width, and the protection pad length and the protection pad width are respectively greater than the contact length and the contact width; and A second substrate disposed opposite to the first substrate, and the spacers are disposed on the second substrate to be in contact with the protective pads; The bending amount of the panel module in the first direction is greater than the bending amount in the second direction, and the length of the protection pad is greater than the width of the protection pad. The panel module according to claim 1, wherein the vertical projection range of each of the protection pads on the first top surface is partially overlapped with the vertical projection range of one of the thin film transistors on the first top surface Set. The panel module according to claim 1, wherein when the panel module is bent, the vertical projection range of the contact area of each spacer on the first top surface is defined by the protection pad on the first top surface Covered by the vertical projection range. The panel module according to claim 1, wherein the protective pad is made of metal. The panel module according to claim 1, wherein the surfaces of the protective pad and the spacer are respectively covered by a first alignment layer and a second alignment layer, and the contact area is separated from the first alignment layer and the second alignment layer. Two alignment layers are in contact with the protection pad. The panel module according to claim 1, wherein the pixel electrode layer further comprises: Multiple pixel electrodes; A plurality of data lines extending along the first direction; and A plurality of gate lines extending along the second direction; Each of the thin film transistors is correspondingly disposed at the intersection of one of the data lines and one of the gate lines, and is respectively connected to one of the adjacent data lines and one of the gate lines A coupling, each pixel electrode is between two adjacent data lines and two adjacent gate lines, and each pixel electrode is connected to one of the thin film transistors The drain electrode is electrically connected. The panel module according to claim 6, further comprising: A liquid crystal layer disposed between the pixel electrode layer and the second substrate; A plurality of shading strips are arranged between the liquid crystal layer and the second substrate, and the extending direction of each shading strip is substantially parallel to the extending direction of the first direction. The panel module according to claim 7, wherein: The vertical projection range of each of the shading strips on the first top surface covers the vertical projection range of one of the plurality of data lines on the first top surface, Each of the shading belts includes a plurality of belt parts and a plurality of expansion parts arranged between two adjacent belt parts, and the vertical projection range of each expansion part on the first top surface covers the plurality of spacers In the vertical projection range of one of the two parts on the first top surface, the width of each expansion part in the second direction is greater than the width of each belt part in the second direction. The panel module according to claim 8, wherein each of the data lines has a data line width in the second direction, and the width of each of the belt portions in the second direction is 2 to 9 times the width of the data line . The panel module according to claim 8, wherein the width of each of the belt portions in the second direction is between 14.5 and 25 μm. The panel module according to claim 7, wherein each of the protection pads further includes an extension part extending along the first direction, and the vertical projection range of the extension part on the first top surface is covered by the shading strips One of them is covered by the vertical projection range of the first top surface. The panel module according to claim 7, wherein the pixel electrode layer includes a planarization layer, and each of the protection pads can be formed together with the planarization layer.

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