WO2019006917A1

WO2019006917A1 - Curved-surface display panel and display device

Info

Publication number: WO2019006917A1
Application number: PCT/CN2017/107258
Authority: WO
Inventors: 陈猷仁
Original assignee: 惠科股份有限公司; 重庆惠科金渝光电科技有限公司
Priority date: 2017-07-06
Filing date: 2017-10-23
Publication date: 2019-01-10
Also published as: CN107132704A

Abstract

A curved-surface display panel (400) and a display device. The curved-surface display panel (400) comprises an active element array substrate (410), a plurality of pixel units, an opposite substrate (430), and spacers (440). Each pixel unit comprises a plurality of monochrome sub-pixel units (411) arranged in an array; the monochrome sub-pixel units (411) are different in color and are of a rectangular structure; the long side of each monochrome sub-pixel unit (411) is parallel to the bending direction of the display panel (400); the distribution density of the spacers (440) is gradually increased from the middle of the display panel (400) to the curved two sides.

Description

Curved display panel and display device

Technical field

The present application relates to the field of electronic technologies, and in particular, to a curved display panel and a display device.

Background technique

More and more LCD panels are used in curved displays. Because of the new viewing experience, curved display technology is slowly being accepted by consumers, so curved display technology has gradually become a new development direction.

The curved screen is generally designed to be shared with the flat screen at the time of design. However, when the flat screen is actually bent, the portion of the curved surface is prone to color shift or insufficient transmittance, resulting in uneven image, especially glass bending. The resulting stress effects and unevenness of the pixels make the picture quality not high when viewed from the side.

Application content

The embodiment of the present invention provides a curved display panel and device, which can reduce the deformation amount of the pixel unit when the panel is bent, and improve the unevenness of the box thickness caused by the local stress on both sides of the panel when bending.

In one aspect, the embodiment of the present application provides a curved display panel, including:

Active device array substrate;

a plurality of pixel units formed on the active device array substrate, each of the pixel units including an array configured with a plurality of monochrome sub-pixel units, the plurality of monochrome sub-pixel units having different colors, the monochrome The sub-pixel unit has a rectangular structure, and a long side of the monochromatic sub-pixel unit is parallel to a bending direction of the panel;

a counter substrate disposed opposite to the active device array substrate;

The spacer is disposed between the active device array substrate and the opposite substrate, and a distribution density of the spacer gradually increases from a central portion of the display panel to a curved side.

On the other hand, an embodiment of the present application provides a curved display panel, including:

Active device array substrate;

a plurality of pixel units formed on the active device array substrate, each of the pixel units includes at least three monochromatic sub-pixel units arranged in an array, and the colors of the at least three monochromatic sub-pixel units are different. The monochrome sub-pixel unit has a rectangular structure, and a long side of the monochrome sub-pixel unit is parallel to a bending direction of the display panel;

a counter substrate disposed opposite to the active device array substrate;

a spacer disposed between the active device array substrate and the opposite substrate, wherein a distribution density of the spacer increases symmetrically from a central portion of the display panel toward a curved side, the spacer comprising a main body and An auxiliary body having a height lower than a height of the main body and disposed on a side of the main body, the hardness of the auxiliary body being greater than a hardness of the main body;

The surface of the monochromatic sub-pixel unit is etched with an alignment pattern, and the ratio between the alignment patterns changes as the curvature of the current position display panel changes.

In another aspect, the embodiment of the present application provides a display device, including:

Control component

a curved display panel, the curved display panel comprising:

Active device array substrate;

a counter substrate disposed opposite to the active device array substrate;

The spacer is disposed between the active device array substrate and the opposite substrate, and a distribution density of the spacer gradually increases from a middle portion of the panel toward a curved side.

The curved display panel and the device of the embodiment of the present invention change the arrangement of the pixel units so that the portion with the small pixel unit is on the curved line of the curved surface, and the distribution density of the spacers in the panel is changed, so that the distribution of the spacers The density gradually increases from the middle of the panel to the curved sides, thereby reducing the amount of change in the area of the pixel unit when it is bent, and improving the unevenness of the box thickness caused by the local stress on both sides of the panel during bending, so that the display The panel can also achieve better picture quality when viewed from the side.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are some embodiments of the present application. For the ordinary technicians, other drawings can be obtained based on these drawings without paying creative labor.

1 is a partial side cross-sectional view of a curved display panel according to an embodiment of the present application;

2 is a schematic plan view of a curved display panel according to an embodiment of the present application;

3 is a partially enlarged schematic view of a curved display panel before being bent according to an embodiment of the present application;

4 is a partially enlarged schematic view showing a curved display panel after being bent according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a pixel unit of a curved display panel according to an embodiment of the present disclosure;

6 is a schematic diagram of another monochrome sub-pixel unit of a curved display panel according to an embodiment of the present application;

FIG. 7 is a schematic diagram of another monochrome sub-pixel unit of a curved display panel according to an embodiment of the present application; FIG.

FIG. 8 is a schematic diagram of a display device according to an embodiment of the present application; FIG.

FIG. 9 is a block diagram of a display device according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the drawings in the embodiments of the present application. It is obvious that the described embodiments are a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

It will be understood that the terms "comprise" and "the" when used in the specification and the appended claims "Comprising" indicates the existence of the described features, integers, steps, operations, elements and/or components, but does not exclude the presence of one or more other features, integers, steps, operations, elements, components and/or combinations thereof Add to.

The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used in the specification and the appended claims, the claims

As shown in FIG. 1 and FIG. 2, a curved display panel 400 includes an active device array substrate 410. A plurality of pixel units are formed on the active device array substrate 410. Each pixel unit includes an array of arrays. The monochrome sub-pixel unit 411 has a color different in color, and the monochrome sub-pixel unit 411 has a rectangular structure, and the long side of the monochrome sub-pixel unit 411 is parallel to the bending direction of the display panel 400. The counter substrate 430 is disposed opposite to the active device array substrate 410. The spacer 440 is disposed between the active device array substrate 410 and the opposite substrate 430 to support the active device array substrate 410 and the opposite substrate 430 when the external force acts. The distribution density of the spacers 440 is from the middle of the display panel 400. The sides of the curve gradually increase.

Specifically, the display panel 400 includes an active device array substrate 410 and a counter substrate 430 disposed opposite thereto. The active device array substrate 410 has a plurality of pixel units, and each of the pixel units includes an array of a plurality of monochrome sub-pixel units. 411, the colors of the plurality of monochrome sub-pixel units 411 are different, the monochrome sub-pixel unit 411 has a rectangular structure, the long sides of the monochrome sub-pixel unit 411 are parallel to the bending direction of the display panel 400, and the monochrome sub-pixel unit 411 is along the edge. The size of the display panel 400 in the direction of the curved fold line is smaller than the size of the remaining direction of the monochrome sub-pixel unit 411, that is, when the panel 400 is bent, the size of the monochrome sub-pixel unit 411 in the direction of the curved fold line 450 of the panel 400 is a monochrome. The minimum size on the pixel unit 411. For example, a liquid crystal display panel, a liquid crystal layer 420 disposed between the active device array substrate 410 and the opposite substrate 430, and a spacer 440 for supporting the active device array substrate 410 and the opposite substrate 430 when subjected to an external force are separated. The distribution density of the mat 440 gradually increases from the middle of the panel 400 to the curved sides. Because the panel 400 is bent, the internal stress of the panel 400 gradually increases from the middle of the panel 400 to the curved sides, correspondingly increasing the arrangement density of the spacers 440 to offset different local stresses of the respective parts, that is, as shown in FIG. 2, a, b. The three regions of c, after the panel 400 is bent, the bending stress of the three regions is a>b>c, so the density of the spacers 440 of the three regions is distributed to offset the bending stress, and the specific three regions are separated. The arrangement density of the mat 440 is a>b>c.

By changing the arrangement of the monochrome sub-pixel units 411, the portion where the monochrome sub-pixel unit 411 is the smallest is placed on the curved line of the curved surface, and the distribution density of the spacers 440 in the panel 400 is changed, so that the distribution of the spacers 440 is made. The density gradually increases from the middle of the panel 400 toward the curved sides, thereby reducing the amount of change in the area of the monochromatic sub-pixel unit 411 when bent, and improving the thickness of the box due to the local stress on both sides of the panel 400 during bending. The problem of uniformity allows the display panel to achieve better picture quality when viewed from the side.

In some embodiments, the curved display panel can be, for example, a twisted nematic liquid crystal curved display panel, a planar conversion liquid crystal curved display panel, a multi-quadrant vertical alignment liquid crystal curved display panel, an OLED curved display panel, a QLED curved display panel, or Other display panels.

Specifically, the pixel unit includes a plurality of monochrome sub-pixel units 411 that are different in color and are adjacently arranged along the direction of the curved line 450 of the display panel 400.

Specifically, each pixel unit is composed of a plurality of monochrome sub-pixel units 411, and may be composed of, for example, three monochromatic sub-pixel units 411, which are respectively R, G, B, three primary color sub-pixel units 411, three The monochrome sub-pixel units 411 are arranged adjacent to each other along the curved fold line 450.

Referring to FIG. 5, specifically, the monochrome sub-pixel unit 411 has a rectangular structure. The long side of the rectangular structure is parallel to the bending direction of the panel 400, and the short side thereof is parallel to the curved line 450 of the panel, and the size of the portion of the broken line 450 is The minimum size on the monochromatic sub-pixel unit 411 is such that the volume variable occurring in the monochrome sub-pixel unit 411 is minimized when the panel 400 is bent.

Specifically, referring to FIG. 6 and FIG. 7 , schematic diagrams of a monochrome sub-pixel unit 411 of two different arrangements, wherein the monochrome sub-pixel unit 411 m illustrated in FIG. 6 is an arrangement used in the prior art, The size of the color sub-pixel unit 411m in the x-axis direction is smaller than the size in the y-axis direction, and the y-axis direction in the figure is the curved polygonal line direction of the panel 400. When the panel 400 is bent, the monochrome sub-pixel unit 411m has one at x. The type variable in the axial direction, as shown by Q1 in Fig. 6, causes the pixel areas on the left and right sides in Fig. 6 to become asymmetrical. The monochrome sub-pixel unit 411n shown in FIG. 7 is an arrangement used in the embodiment of the present application, and is arranged by rotating the pixel unit of the existing design by 90 degrees, at this time, the monochrome sub-pixel unit 411n is on the x-axis. The dimension is larger than the dimension on the y-axis, and the y-axis direction is the direction of the curved fold line of the panel 400. After the panel 400 is bent, the deformed region of the pixel unit in the x-axis direction is shown by Q2 in the figure because of the bending curvature of the panel 400. The same, so the type change regions Q1 and Q2 have the same size change on the x-axis, but the size of the deformed region Q1 of the monochrome sub-pixel unit 411m on the y-axis is larger than the deformed region Q2 of the monochrome sub-pixel unit 411n. The size of the y-axis, so that the area of the morphing region Q2 is smaller than the area of the Q1, that is, after the panel 400 is bent, the arrangement of the pixel unit 411n used in the embodiment of the present application is smaller than that of the prior art due to the bending. The arrangement of the medium-monochromatic sub-pixel units 411m.

Further, the surface of the monochromatic sub-pixel unit 411 is etched with an alignment pattern, and the ratio between the alignment patterns changes as the curvature of the current position display panel changes.

Referring to FIG. 3, FIG. 4 and FIG. 5, specifically, for example, the monochrome sub-pixel unit 411 is divided into two alignment patterns A and B. When the panel is in a plane, the alignment pattern A and the alignment pattern B have the same area, that is, As shown in FIG. 3, the left and right alignment pattern regions on the three monochrome sub-pixel units 411a, 411b, and 411c at different positions are equal in area. When the panel 400 is bent, as shown in FIG. 4, under the action of bending stress, The area of the right and left alignment patterns on the same monochrome sub-pixel units 411a, 411b, and 411c should be changed. In order to make the ratio between the alignment patterns on the monochrome sub-pixel unit 411 still reach the target ratio after the panel is bent, it is necessary to perform the proportional compensation in advance when the panel 400 is in the planar stage. For the monochrome sub-pixel unit 411a in the figure, it is deformed after the panel 400 is bent, and the left alignment pattern area is smaller than the right alignment pattern area, so that the left side of the monochrome sub-pixel unit 411a can be compensated in the pre-plane stage. The area of the left alignment pattern of the monochrome sub-pixel unit 411a is made larger than the area of the right alignment pattern, so that the left and right alignment pattern areas of the monochrome sub-pixel unit 411a are the same after the panel 400 is bent. For the monochrome sub-pixel unit 411c in the figure, it is deformed after the panel 400 is bent, and the left alignment pattern area is larger than the right alignment pattern area, so that the right side of the monochrome sub-pixel unit 411c can be compensated in the pre-plane stage. The area of the right alignment pattern of the monochrome sub-pixel unit 411c is made larger than the area of the left alignment pattern, so that the left and right alignment pattern areas of the monochrome sub-pixel unit 411c are the same after the panel 400 is bent.

The alignment pattern of the monochromatic sub-pixel unit 411 at each position of curvature on the panel 400 is preliminarily considered how it is deformed after bending, so that the monochrome sub-pixel unit 411 is bent after each curvature position according to the curvature The generated type variable is used to compensate the alignment pattern area of the monochrome sub-pixel unit 411 in the planar stage, and the alignment pattern ratio of the monochrome sub-pixel unit 411 at each position after the panel 400 is bent reaches the target ratio.

Referring to FIG. 1 , further, the spacer 440 includes a main body 441 and a auxiliary body 442 . The height of the auxiliary body 442 is lower than the height of the main body 441 and is disposed on the side of the main body 441 . The hardness of the auxiliary body 442 is greater than the main body 441 . Hardness.

Specifically, the spacer 440 includes a main body 441 and a auxiliary body 442. The height of the auxiliary body 442 is lower than the height of the main body 441, and can assist the active device array substrate 410 and the opposite substrate 430 after the main body 441 reaches the support limit. For example, the height of the auxiliary body 442 is two-thirds of the height of the main body 441, and the auxiliary body 442 is disposed on the side of the main body 441. When the substrate is supported, the main body 441 and the auxiliary body 442 also play a certain supporting role. The supporting ability of the spacer 440, at the same time, in the selection of the material of the spacer 440, the main body 441 can be selected from the existing common materials, and the material hardness of the auxiliary body 442 is higher than that of the main body 441.

Further, the monochrome sub-pixel units 411 are aligned in the direction of the fold line 450 curved along the display panel 400, and the spacers 440 are symmetrically distributed from the center line of the panel 400 to both sides.

Specifically, the monochrome sub-pixel unit 411 is aligned on the display panel 400 along the direction of the fold line 450, and the spacer 440 is symmetrically distributed from the center line of the display panel 400 to both sides to cope with the curvature of the display panel 400 from the middle to the sides. Varying bending stress.

As shown in FIG. 8 , the embodiment of the present application provides a curved display device 500, including a control component and a curved display panel 400. Referring to FIG. 1 and FIG. 2, a curved display panel 400 provided by the present application includes active a plurality of pixel units are formed on the active device array substrate 410. Each of the pixel units includes an array of a plurality of monochrome sub-pixel units 411. The colors of the plurality of monochrome sub-pixel units 411 are different. The sub-pixel unit 411 has a rectangular structure, and the long sides of the monochrome sub-pixel unit 411 are parallel to the bending direction of the display panel 400. The counter substrate 430 is disposed opposite to the active device array substrate 410. The spacer 440 is disposed between the active device array substrate 410 and the opposite substrate 430 to support the active device array substrate 410 and the opposite substrate 430 when the external force acts. The distribution density of the spacers 440 is from the middle of the display panel 400. The sides of the curve gradually increase.

Referring to FIG. 1, further, the spacer 440 includes a main body 441 and a secondary body 442 having a height lower than the height of the main body 441 and disposed on the side of the main body 441.

Specifically, the spacer 440 includes a main body 441 and a auxiliary body 442. The height of the auxiliary body 442 is lower than the height of the main body 441, and can assist the active device array substrate 410 and the opposite substrate 430 after the main body 441 reaches the support limit. At the same time, the auxiliary body 442 is disposed on the side of the main body 441, and the main body 441 and the auxiliary body 442 also play a certain supporting role when supporting the substrate, thereby improving the supporting ability of the spacer 440.

Referring to FIG. 9 , a block diagram of a display device according to an embodiment of the present application includes a timing control circuit module, a gray scale voltage generating circuit module, a DC-DC conversion circuit module, a display source driving circuit module, and a display. Screen gate drive module. The image signal of the LVDS (Low Voltage Differential Signal Technology Interface) format sent by the front-end video signal processing circuit is converted into the RSDS (low swing differential signal required by the source drive and the gate drive integrated circuit of the display screen via the timing control circuit module) The image signal of the format is simultaneously driven by the timing control circuit module to output the source drive and the drive control signal necessary for the operation of the gate drive circuit (gate drive circuit shift register "displacement" pulse signal STV, gate drive circuit shift register" Trigger "pulse signal CKV, source drive circuit shift register "displacement" start pulse signal STH , source drive circuit shift register "trigger" pulse signal CKH, source pixel signal polarity line by line anyway control signal POL ), these signals are added to the drive circuit around the display, and finally the image is displayed on the display.

The foregoing is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any equivalents can be easily conceived by those skilled in the art within the technical scope disclosed in the present application. Modifications or substitutions are intended to be included within the scope of the present application. Therefore, the scope of protection of this application should be determined by the scope of protection of the claims.

Claims

A curved display panel comprising:

Active device array substrate;

a plurality of pixel units formed on the active device array substrate, each of the pixel units including an array configured with a plurality of monochrome sub-pixel units, the plurality of monochrome sub-pixel units having different colors, the monochrome The sub-pixel unit has a rectangular structure, and a long side of the monochrome sub-pixel unit is parallel to a bending direction of the display panel;

a counter substrate disposed opposite to the active device array substrate;

The spacer is disposed between the active device array substrate and the opposite substrate, and a distribution density of the spacer gradually increases from a central portion of the display panel to a curved side.
The curved display panel according to claim 1, wherein the pixel unit includes a plurality of monochrome sub-pixel units that are different in color and are adjacently arranged along a bending line direction of the display panel.
The curved display panel according to claim 1, wherein the surface of the monochromatic sub-pixel unit is etched with an alignment pattern, and a ratio between the alignment patterns changes with a change in curvature of the current position display panel.
The curved display panel according to claim 3, wherein an area of the alignment pattern on a side where the monochrome sub-pixel unit surface is located on a side having a large curvature is larger than an area of the alignment pattern on a side having a small curvature .
The curved display panel according to claim 3, wherein a ratio between the alignment patterns increases as the curvature of the current position display panel increases.
The curved display panel according to claim 1, wherein the pixel units are aligned in a direction of a line line curved along the panel, and the spacers are symmetrically distributed from both sides of the panel center line.
The curved display panel according to claim 1, wherein the pixel unit comprises a plurality of monochrome sub-pixel units that are different in color and are adjacently arranged along a bending line direction of the display panel, the monochrome sub-pixel The surface of the cell is etched with an alignment pattern, and the ratio between the alignment patterns changes as the curvature of the display panel of the current position changes.
The curved display panel according to claim 1, wherein the spacer comprises a main body and an auxiliary body, the auxiliary body having a height lower than a height of the main body and disposed on a side of the main body.
The curved display panel according to claim 8, wherein the hardness of the auxiliary body is greater than the hardness of the main body.
A curved display panel comprising:

Active device array substrate;

a plurality of pixel units formed on the active device array substrate, each of the pixel units includes at least three monochromatic sub-pixel units arranged in an array, and the colors of the at least three monochromatic sub-pixel units are different. The monochrome sub-pixel unit has a rectangular structure, and a long side of the monochrome sub-pixel unit is parallel to a bending direction of the display panel;

a counter substrate disposed opposite to the active device array substrate;

a spacer disposed between the active device array substrate and the opposite substrate, wherein a distribution density of the spacer increases symmetrically from a central portion of the display panel toward a curved side, the spacer comprising a main body and An auxiliary body having a height lower than a height of the main body and disposed on a side of the main body, the hardness of the auxiliary body being greater than a hardness of the main body;

The surface of the monochromatic sub-pixel unit is etched with an alignment pattern, and the ratio between the alignment patterns changes as the curvature of the current position display panel changes.
The curved display panel according to claim 10, wherein the pixel units are aligned in a direction of a line line curved along the panel, and the spacers are symmetrically distributed from both sides of the panel center line.
A display device comprising:

Control component

a curved display panel, the curved display panel comprising:

Active device array substrate;

a plurality of pixel units formed on the active device array substrate, each of the pixel units including an array configured with a plurality of monochrome sub-pixel units, the plurality of monochrome sub-pixel units having different colors, the monochrome The sub-pixel unit has a rectangular structure, and a long side of the monochrome sub-pixel unit is parallel to a bending direction of the display panel;

a counter substrate disposed opposite to the active device array substrate;

The spacer is disposed between the active device array substrate and the opposite substrate, and a distribution density of the spacer gradually increases from a middle portion of the panel toward a curved side.
The display device according to claim 12, wherein the pixel unit comprises a plurality of monochrome sub-pixel units that are different in color and are adjacently arranged along a curved line direction of the display panel.
The display device according to claim 12, wherein the surface of the monochromatic sub-pixel unit is etched with an alignment pattern, and a ratio between the alignment patterns changes as the curvature of the current position display panel changes.
The curved display panel according to claim 14, wherein an area of the alignment pattern on a side where the monochrome sub-pixel unit surface is located on a side having a large curvature is larger than an area of the alignment pattern on a side having a small curvature .
The curved display panel according to claim 14, wherein a ratio between the alignment patterns increases as the curvature of the current position display panel increases.
The curved display panel according to claim 12, wherein the pixel units are aligned in a direction of a line line curved along the panel, and the spacers are symmetrically distributed from the center line of the panel to both sides.
The curved display panel according to claim 12, wherein the pixel unit comprises a plurality of monochrome sub-pixel units that are different in color and are adjacently arranged along a curved line direction of the display panel, the monochrome sub-pixel The surface of the cell is etched with an alignment pattern, and the ratio between the alignment patterns changes as the curvature of the display panel of the current position changes.
The curved display panel according to claim 12, wherein the spacer comprises a main body and an auxiliary body, the auxiliary body having a height lower than a height of the main body and disposed on a side of the main body.
The curved display panel according to claim 19, wherein the hardness of the auxiliary body is greater than the hardness of the main body.