TWI639869B - Display panel - Google Patents

Abstract

A display panel has a centerline parallel to the non-curved sides of the display panel. The display panel includes a first substrate, a second substrate, and a display medium layer located between the two substrates. The first substrate includes a plurality of first signal lines parallel to the center line. The second substrate includes a shielding layer having a plurality of openings. Each opening has a first side and a second side parallel to the center line, respectively, and the first side is closer to the center line than the second side, wherein each first side is orthographically projected with the first signal line adjacent to the center line on the reference plane Separated by a first distance. Each second side is separated from the orthographic projection of the adjacent first signal line on the reference plane by a second distance. The reference plane is the plane on which the two edges of the first substrate are not bent, and only the first distance and the second distance increase in a direction away from the center line.

Description

Display panel

The invention relates to a display panel, and in particular to a display panel with a light leakage compensation mechanism.

With the rapid advancement of display technology, displays have gradually developed from early cathode ray tube (CRT) displays to recent flat panel displays (FPDs). However, with the popularization of electrical products with a curved appearance, flat displays are not suitable for use in such electrical products because they are difficult to flex. Therefore, in recent years, industry players have begun to study curved display panels to provide display functions for such electrical products.

A conventional method for manufacturing a curved display panel includes the following steps. First, a flat display panel is manufactured. The display panel generally includes an active device array substrate, a color filter substrate, and a display medium disposed between the active device array substrate and the color filter substrate. A shielding layer is usually disposed on the color filter substrate to shield the active device array substrate. An area where an opaque element is disposed thereon and an area where a light leakage problem may exist at the edge of the signal line (hereinafter collectively referred to as a shielded area). Secondly, the display panel is thinned. Finally, the thinned display panel is bent to form a curved display panel. Of course However, after the display panel is bent, the relative arrangement relationship between the shielding layer and the opaque element on the surface of the different substrates will be displaced, resulting in that the partial shielding layer cannot completely shield the opaque element, which affects the visual effect of the display panel And produce light leakage problems.

The invention provides a display panel, which can improve the light leakage problem after the display panel is bent.

A display panel of the present invention has a center line. The center line is parallel to at least one side of the display panel, and the side is a non-curved side. The display panel includes a first substrate, a second substrate, and a display medium layer located between the first substrate and the second substrate. The first substrate includes a plurality of first signal lines and a plurality of second signal lines. The first signal line is parallel to the center line. The second signal line and the first signal line are staggered with each other to define a plurality of pixel units. The second substrate is located on one side of the first substrate and includes a shielding layer. The shielding layer has a plurality of openings. Each opening exposes one of the pixel units. Each opening has a first side and a second side parallel to the center line, and the first side of each opening located on both sides of the center line is closer to the center line than the second side, wherein each first side is adjacent to the first side The orthographic projection of the signal line on the reference plane is separated by a first distance. Each second side is separated from the orthographic projection of the adjacent first signal line on the reference plane by a second distance. The reference plane is the plane on which the non-curved edges of the first substrate are located, and only the first distance and the second distance increase in a direction away from the center line.

A display panel of the present invention has a center line. The center line is parallel to at least one side of the display panel. The sides are non-curved sides. Display panel includes A first substrate, a second substrate, and a display medium layer between the first substrate and the second substrate. The first substrate includes a plurality of first signal lines and a plurality of second signal lines. The first signal line is parallel to the center line. The second signal line and the first signal line are staggered with each other to define a plurality of pixel units. The second substrate is located on one side of the first substrate and includes a shielding layer. The shielding layer has a plurality of openings. Each opening exposes one of the pixel units and has a first side and a second side parallel to the center line, and the first side of each opening on both sides of the center line is closer to the center line than the second side. An orthographic projection of a first signal line adjacent to one side on the reference plane is separated by a first distance. Each second side is separated from the orthographic projection of the adjacent first signal line on the reference plane by a second distance. The reference plane is the plane on which the two edges of the first substrate are not curved. The display panel is curved, and the first distance is substantially the same, and the second distance is substantially the same.

Based on the above, the display panel of the embodiment of the present invention adjusts the shielding area of the shielding layer before the display panel is bent according to the displacement between the shielding layer after the bending and the opaque element (such as the first signal line) to improve the display. Light leakage problem after panel bending.

In order to make the above features and advantages of the present invention more comprehensible, embodiments are hereinafter described in detail with reference to the accompanying drawings.

100, 100A, 200, 300, 400, 500, 600‧‧‧ display panels

110‧‧‧first substrate

112‧‧‧The first signal line

114‧‧‧The second signal line

120‧‧‧second substrate

130‧‧‧Display media layer

AD‧‧‧Active Components

A-A, A-A’‧‧‧ side

AP‧‧‧Opening

BM‧‧‧Shading layer

C‧‧‧Area

CH‧‧‧ Channel layer

D1‧‧‧First distance

D2‧‧‧Second Distance

DE‧‧‧ Drain

E1, E2‧‧‧Edge

G‧‧‧ Clearance

GE‧‧‧Gate

L‧‧‧ Centerline

L’ ‧‧‧ orthographic line

NT‧‧‧ sheltered area

O‧‧‧ opening

W‧‧‧ size

P‧‧‧Pixel Unit

PE‧‧‧Pixel electrode

R, R’‧‧‧ curvature radius

RF‧‧‧ Reference Plane

RO‧‧‧Curvature Center

S1‧‧‧First side

S2‧‧‧Second side

SE‧‧‧Source

X‧‧‧distance

△ D1, △ D2‧‧‧ Difference

FIG. 1A is a schematic view of a display panel after being bent according to a first embodiment of the present invention.

1B and FIG. 1C are respectively a display surface according to the first embodiment of the present invention. Schematic cross section of the plate before and after bending.

1D and FIG. 1E are schematic top views of a display panel before and after bending according to a first embodiment of the present invention, respectively.

FIG. 1F is an enlarged schematic view of a region C in FIG. 1D.

2A and 2B are schematic cross-sectional views of a display panel before and after bending according to a comparative example.

FIG. 2C and FIG. 2D are schematic partial top views of the display panel before and after the comparative example are bent, respectively.

3A and 3B are schematic cross-sectional views of a display panel before and after bending according to a second embodiment of the present invention, respectively.

3C and 3D are schematic top views of a display panel before and after bending according to a second embodiment of the present invention, respectively.

FIG. 4A is a schematic view of a display panel after being bent according to a third embodiment of the present invention.

4B and 4C are schematic cross-sectional views of a display panel before and after bending according to a third embodiment of the present invention, respectively.

5A and 5B are schematic cross-sectional views of a display panel before and after bending according to a fourth embodiment of the present invention, respectively.

6A and 6B are schematic diagrams of a display panel after being bent according to other embodiments of the present invention, respectively.

FIG. 1A is a schematic view of a display panel after being bent according to a first embodiment of the present invention. 1B and FIG. 1C are schematic cross-sectional views of a display panel before and after bending according to a first embodiment of the present invention. The cross-section is a cross-section perpendicular to the center line L of FIG. 1A, and two opposite long sides of the cross-section are parallel. Curved side AA 'in FIG. 1A. 1D and FIG. 1E are schematic top views of a display panel before and after bending according to a first embodiment of the present invention, respectively. The shielding layer in FIG. 1D and FIG. 1E is actually located above the first signal line and the second signal line. However, in order to clearly show the relative arrangement relationship between the first signal line, the second signal line, and the opening of the shielding layer, the first signal line and the second signal line in FIG. 1D and FIG. 1E are indicated by solid lines. FIG. 1F is an enlarged schematic view of a region C in FIG. 1D. In order to clearly show the relative arrangement relationship of each element in the pixel unit, FIG. 1F only shows the opening position of the shielding layer, and the shielding layer is omitted. 1A to 1F, the display panel 100 of this embodiment may be any suitable display panel, such as a liquid crystal display panel, an organic electroluminescence display panel, an electrophoretic display panel, or an electrowetting display panel.

The display panel 100 has a center line L, the center line L is parallel to at least one side of the display panel 100, and the sides of the display panel 100 located on opposite sides in the extending direction of the center line L are adapted to be bent to form a curved display panel. As shown in FIG. 1A, after the display panel 100 is bent, it has curved sides A-A 'and sides A-A that do not follow the display panel 100, and the center line L is parallel to the sides A-A.

The display panel 100 includes a first substrate 110, a second substrate 120, and a display medium layer 130 located between the first substrate 110 and the second substrate 120. Taking a liquid crystal display panel as an example, the first substrate 110 may be an active element array substrate and the second substrate 120 It may be a color filter substrate, and the display medium layer 130 may be a liquid crystal layer, but is not limited thereto.

The first substrate 110 includes a plurality of first signal lines 112 and a plurality of second signal lines 114. The first signal line 112 and the second signal line 114 are disposed on a side of the first substrate 110 near the second substrate 120, and the second signal line 114 and the first signal line 112 are staggered with each other to define a plurality of pictures arranged in an array.素 组 P。 The unit P. As shown in FIG. 1A, the first signal line 112 is parallel to the center line L, that is, the first signal line 112 is parallel to the side AA that does not bend with the display panel 100. Therefore, the first signal line 112 does not follow the display panel 100. Bend and bend. In addition, the second signal line 114 is parallel to the side A-A 'that is bent with the display panel 100, and therefore, the second signal line 114 is bent as the display panel 100 is bent. In this embodiment, the first signal line 112 is, for example, a scanning line, and the second signal line 114 is, for example, a data line, but is not limited thereto.

The second substrate 120 is opposite to the first substrate 110 and includes a shielding layer BM. The shielding layer BM is used to shield components that are not to be seen in the first substrate 110. Therefore, the material of the shielding layer BM is a material with low light transmittance, such as dark resin, metal, metal oxide, or other materials with good light shielding effects. Appropriate material with low reflection characteristics.

The shielding layer BM is disposed on a side of the second substrate 120 close to the first substrate 110, and the shielding layer BM has a plurality of openings O. Each opening O exposes one of the pixel units P. Specifically, as shown in FIG. 1D and FIG. 1F, each pixel unit P corresponds to one of the sub pixels, and each pixel unit P may be configured with an active element AD and a pixel electrode PE electrically connected to the active element AD. .

As shown in FIG. 1F, the active element AD is, for example, a bottom gate thin film transistor. It includes a gate electrode GE, a channel layer CH, a source electrode SE, and a drain electrode DE. The gate electrode GE is electrically connected to the first signal line 112, the source electrode SE is electrically connected to the second signal line 114, and the drain electrode DE is electrically connected to the pixel electrode PE through the opening AP. The gate electrode GE and the first signal line 112 can be formed by the same process, and belong to the first electrode layer, for example. The source electrode SE, the drain electrode DE, and the second signal line 114 can be formed by the same process, and belong to the second electrode layer, for example. The first electrode layer and the second electrode layer do not belong to the same electrode layer, and they are electrically insulated from each other through a gate insulation layer (not shown). It should be noted that the types of the elements in the pixel unit P and their relative configuration relationships are merely examples, and are not limited to those shown in FIG. 1F. In another embodiment, other elements may be further configured in each pixel unit P according to different design requirements. Alternatively, the number, arrangement relationship, shape, and manufacturing order of the active element AD and the pixel electrode PE are changed.

Please refer to FIG. 1B to FIG. 1F. For example, the shielding layer BM covers at least the area where the opaque components such as the first signal line 112, the second signal line 114, and the active device AD are located, and the edges of the first signal line 112 and the second signal line 114. Areas that may have light leakage problems, such as the gap between the pixel electrode PE and the first signal line 112, and the gap between the pixel electrode PE and the second signal line 114, so that the display panel 100 has an ideal visual effect. For ease of description, the above-mentioned areas are collectively referred to as the masked area NT, and the area where the masked area NT is located is surrounded by a thick dashed line in FIG. 1F. Taking into consideration both the visual effect and the aperture ratio, the masking layer BM preferably covers the masked area NT, and the opening O of the masking layer BM preferably exposes a region other than the masked area NT. However, considering the opening O of the shielding layer BM and the opaque element after the display panel 100 is bent, The relative position between the components will be translated. In this embodiment, the covering area of the shielding layer BM is larger than the masked area NT, and the opening O of the shielding layer BM exposes at least a part of the pixel electrode PE.

Each opening O has a first side S1 and a second side S2 that are parallel to the center line L, respectively. In this embodiment, the first side S1 and the second side S2 are respectively parallel to the short side of the pixel unit P, but are not limited thereto. In addition, the first side S1 of each opening O located on both sides of the center line L is closer to the center line L than the second side S2, that is, the second side S2 of each opening O is farther from the center line L than the first side S1.

The first side S1 is separated from the orthographic projection of the adjacent first signal line 112 on the reference plane RF by a first distance D1. The second side S2 is separated from the orthographic projection of the adjacent first signal line 112 on the reference plane RF by a second distance D2. The reference plane RF is a plane where the two edges E1 and E2 of the first substrate 110 are not bent. When the display panel 100 is in a planar state, the reference plane RF falls on the first substrate 110. When the display panel 100 is in a bent state, the reference plane RF falls on a region other than the first substrate 110.

In this embodiment, the first distance D1 and the second distance D2 are designed corresponding to the degree of bending and the bending direction of the display panel 100 to improve the light leakage problem of the conventional display panel after bending. The following uses FIG. 2A to FIG. 2D for further description. 2A and 2B are schematic cross-sectional views of a display panel before and after bending according to a comparative example. FIG. 2C and FIG. 2D are schematic partial top views of the display panel before and after the comparative example are bent, respectively. Please refer to FIGS. 2A to 2D. The display panel 100A of the comparative example is a display panel without light leakage compensation. Specifically, when the display panel 100A is in a flat state, all the first distances D1 are the same, and all the second distances D2 are the same. That is, all pixel electrodes The area and position of PE exposed by the opening O are the same.

As shown in FIGS. 2A and 2C, although the shielding layer BM can cover the shielded area NT before the display panel 100A is bent, as shown in FIG. 2B and FIG. 2D, the display panel 100A is bent so that the first substrate 110 is located Between the center of curvature RO of the display panel 100A and the second substrate 120, the side of the partially shielded area NT away from the center line L will be exposed by the opening O. Among the exposed opaque elements (such as the active element AD) And the first signal line 112) will affect the visual effect of the display panel 100A, and the exposed gap G (the gap G is located between the pixel electrode PE and the first signal line 112) will cause light leakage. The straight line distance from the center of curvature RO to any point on the second substrate 120 is equal, and under the structure where the first substrate 110 is located between the center of curvature RO and the second substrate 120, the center of curvature RO to the second substrate 120 The straight line distance of any point is defined as the radius of curvature R.

Further, when the display panel 100A is bent in a direction in which the second substrate 120 is directed to the first substrate 110, the second substrate 120 is bent toward the arrangement surface of the shielding layer BM. Under the effect of stress, the orthographic projections of the openings O located on both sides of the center line L on the reference plane RF are translated in a direction close to the orthographic projection line L 'of the center line L on the reference plane RF. At this time, the side of the masked area NT (such as the area where the first signal line 112 is located) near the center line L is still masked by the masking layer BM, but the side of the masked area NT far from the center line L is masked by the masking layer BM The opening O is exposed. In addition, as the distance between the opening O and the center line L becomes longer, the area of the shielded area NT exposed by the opening O becomes larger. That is, when the display panel 100A is bent in a direction in which the second substrate 120 is directed to the first substrate 110, the first side S1 and the second side S2 are on the reference plane RF. The orthographic projections on the upper side will approach the orthographic projection line L ', wherein the orthographic projections of the first side S1 and the adjacent first signal line 112 on the reference plane RF will approach each other, and the second side S2 and the adjacent first The orthographic projection of a signal line 112 on the reference plane RF will move away from each other, resulting in a reduction in the first distance D1 and an increase in the second distance D2.

1B and 1C, when the display panel 100A is bent toward the second substrate 120 and the first substrate 110, the light leakage phenomenon mainly occurs in the shielded area NT (such as the location of the first signal line 112). One side of the center line L. Therefore, in this embodiment, when the display panel 100 is in a flat state, the light leakage problem after the display panel 100A in the comparative example is bent is compensated, for example, the first distance D1 is directed away from the center line L (that is, the orthographic projection line L ′). The direction increases, and the increase amount of each first distance D1 corresponds to the translation amount of the opening O after bending. Specifically, if the orthographic projection of the first side S1 of the opening O on the reference plane RF after the curve is translated by a distance X toward the center line L (that is, the orthographic projection line L ′), the first side of the opening O is made The orthographic projection of S1 on the reference plane RF is translated by a distance X in a direction away from the center line L (that is, the orthographic projection line L ′) before bending, that is, the first distance D1 increases the distance X, as shown in FIG. 1B. In this way, even if the orthographic projection of the first side S1 of the opening O on the reference plane RF is curved and shifted by a distance X toward the center line L (that is, the orthographic projection line L ′), the masked area NT (such as the first The side of the signal line 112) far from the center line L (that is, the orthographic projection line L ') can also be shielded by the shielding layer BM, as shown in FIG. 1C. That is, the above-mentioned design of this embodiment can effectively improve the light leakage problem after the display panel 100A of the comparative example is bent.

On the other hand, since the masked area NT is close to the center line L after bending, There is no light leakage on the side, so this embodiment does not change the second distance D2, that is, in this embodiment, before the display panel 100 is bent, the second distance D2 is substantially the same, and the first distance D1 is away from the center line L ( That is, the direction of the orthographic projection line L ′) increases. After the display panel 100 is bent, the orthographic projection of the opening O on the reference plane RF is translated in a direction close to the orthographic projection line L ′. Therefore, the first distance D1 and the second distance D2 will be opposite before and after the display panel 100 is bent. the trend of. That is, after the display panel 100 is bent, in the orthographic projection on the reference plane RF, the first distance D1 is substantially the same, and the second distance D2 increases in a direction away from the center line L (that is, the orthographic projection line L '). It should be noted that the substantial similarity is not limited to the exact same, but should cover the variation value caused by process variation. In the actual manufacturing process, this variation value falls within about 15% of the pitch between two adjacent pixel units P. For example, when the distance between two adjacent pixel units P is 100 μm, the variation value is within ± 15 μm. That is, the first distance D1 relatively close to the center line L (that is, the orthographic projection line L ') and the first distance D1 relatively far from the center line L (that is, the orthographic projection line L') may exist within about ± 15 μm due to process variation. Variation value.

In addition, in a planar state, the difference ΔD1 between two adjacent first distances D1 in the extending direction of the second signal line 114 should increase as the curvature radius R of the display panel 100 decreases, that is, The more curved the display panel 100 (the smaller the curvature radius R), the larger the difference ΔD1. In this way, it is helpful to achieve the effect of shielding light leakage according to different bending degrees. In this embodiment, the difference value ΔD1 increases, for example, in a direction away from the center line L (that is, the orthographic projection line L '), that is, the difference value ΔD1 is not constant, but the present invention is not limited thereto. In another embodiment, the difference ΔD1 may be a fixed value.

Compared with increasing the first distance D1 and the second distance D2 at the same time, this embodiment For example, by increasing the first distance D1 and the second distance D2 only in a direction away from the center line L (that is, the orthographic projection line L '), the negative effect of the compensation mechanism on the aperture ratio can be reduced, thereby helping to make the While improving the light leakage problem, the display panel 100 can also take into account the light transmittance and uniformity of the display panel 100. In an experimental example, compared with the comparative example in which the first distance D1 and the second distance D2 are increased at the same time, this embodiment makes the first distance D1 and the second distance D2 away from the center line L (that is, positive only) in one direction. The design in which the direction of the projection line L ′) is increased can increase the aperture ratio from 26.50% of the comparative example to 31.84% or more, and increase the light transmittance from 1.47% of the comparative example to 1.76% or more.

In the above-mentioned embodiment, the size W of the opening O decreases in a direction away from the center line L, but the present invention is not limited thereto. 3A and 3B are schematic cross-sectional views of a display panel before and after bending according to a second embodiment of the present invention, respectively. 3C and 3D are schematic top views of a display panel before and after bending according to a second embodiment of the present invention, respectively. Please refer to FIGS. 3A to 3D. The display panel 200 in this embodiment is substantially the same as the display panel 100, and the same components are denoted by the same reference numerals, and details are not described herein again. The main difference between the display panel 200 and the display panel 100 is that before the display panel 200 is bent, the second distance D2 is adopted to decrease away from the center line L (that is, the orthographic projection line L ′), so as to be lifted away from the center line. The area of the opening O of L is to increase the aperture ratio of the display panel 200. Under such a design, before the display panel 200 is bent, the shielded area NT (such as the position of the first signal line 112) far from the center line L may be exposed by the opening O (at this time, the first signal line 112 and the second signal line 112 are exposed). The second distance D2 between the edges S2 is regarded as a negative value), and the distance between the first signal line 112 and the center line L exposed by the opening O is smaller than that of the corresponding second side S2 and the center line L distance.

In this embodiment, the amount of reduction of each second distance D2 is exactly equal to the amount of increase of the corresponding first distance D1. Therefore, the size W of the opening O relatively far from the center line L and the opening O relatively close to the center line L are substantially the same. In addition, after the display panel 200 is bent, in the orthographic projection on the reference plane RF, the first distance D1 is substantially the same, and the second distance D2 is substantially the same. It should be noted that the substantial similarity is not limited to the exact same, but should cover the variation value caused by process variation. In the actual manufacturing process, this variation value falls within about 15% of the pitch between two adjacent pixel units P.

With the above design, in addition to improving the conventional light leakage phenomenon of the display panel after bending, this embodiment also helps to improve the aperture ratio of the display panel 200, so that the display panel 200 has an ideal light transmittance and uniformity. .

The above embodiment is an improvement on the light leakage problem when the display panel is bent in a direction in which the second substrate 120 is directed toward the first substrate 110. The method for improving the light leakage problem when the display panel is bent toward the first substrate 110 and the second substrate 120 is described below with reference to FIGS. 4A to 5B. FIG. 4A is a schematic view of a display panel after being bent according to a third embodiment of the present invention. 4B and 4C are schematic cross-sectional views of a display panel before and after bending according to a third embodiment of the present invention, respectively. 5A and 5B are schematic cross-sectional views of a display panel before and after bending according to a fourth embodiment of the present invention, respectively. Please refer to FIG. 4A to FIG. 4C first. The display panel 300 in this embodiment is substantially the same as the display panel 100, and the same components are denoted by the same reference numerals, and details are not described herein again. The main difference between the display panel 300 and the display panel 100 is that the display panel 300 is adapted to be bent in a direction in which the first substrate 110 is directed toward the second substrate 120, so that the second The substrate 120 is located between the center of curvature RO of the display panel 300 and the first substrate 110. Under this architecture, the straight line distance from the center of curvature RO to any point on the first substrate 110 is defined as the radius of curvature R '.

When the display panel 300 is bent in a direction in which the first substrate 110 is directed toward the second substrate 120, the second substrate 120 is bent toward a surface remote from the first substrate 110. Under the effect of stress, the orthographic projections of the openings O located on both sides of the center line L on the reference plane RF are translated in a direction away from the orthographic projection line L '. Without compensation, the side of the masked area NT (such as the area where the first signal line 112 is located) far from the center line L is still masked by the masking layer BM, but a part of the masked area NT is close to the center line L. The opening O of the side shielded layer BM is exposed. In addition, as the distance between the opening O and the center line L becomes longer, the area of the masked area NT exposed by the opening O increases. That is, when the display panel 300 is bent in a direction in which the first substrate 110 is directed to the second substrate 120, the orthographic projections of the first side S1 and the second side S2 on the reference plane RF are all away from the center line L (that is, the orthographic projection) Line L '), where the orthographic projection of the first side S1 and the adjacent first signal line 112 on the reference plane RF will be away from each other, and the second side S2 and the adjacent first signal line 112 are at the reference The orthographic projections on the plane RF will be closer to each other, causing the first distance D1 to increase and the second distance D2 to shrink.

When the display panel 300 is bent toward the first substrate 110 and the second substrate 120, the light leakage phenomenon mainly occurs on the side of the shielded area NT (such as the area where the first signal line 112 is located) near the center line L. Therefore, in this embodiment, when the display panel 300 is in a flat state, as shown in FIG. 4B, the second distance D2 is increased in a direction away from the center line L (that is, the orthographic projection line L ′), and each second distance D2 is increased. Quantity pair The amount of translation of the opening O after bending should be. In this way, the side of the masked area NT (such as the area where the first signal line 112 is located) near the center line L can also be masked by the masking layer BM after the display panel 300 is bent, as shown in FIG. 4C. That is, the above design of this embodiment can effectively improve the light leakage problem after the conventional display panel is bent.

On the other hand, since there is no light leakage on the side of the shielded area NT away from the center line L, the first distance D1 is not changed in this embodiment, that is, the first distance before the display panel 300 is bent in this embodiment. D1 is substantially the same, and the second distance D2 increases in a direction away from the center line L (that is, the orthographic projection line L ′). After the display panel 300 is bent, the orthographic projection of the opening O on the reference plane RF is shifted away from the center line L (that is, the orthographic projection line L ′). Therefore, the first distance D1 and the second distance D2 are on the display panel. 300 bends will show the opposite trend before and after. That is, after the display panel 300 is bent, in the orthographic projection on the reference plane RF, the second distance D2 is substantially the same, and the first distance D1 increases in a direction away from the center line L (that is, the orthographic projection line L '). It should be noted that the substantial similarity is not limited to the exact same, but should cover the variation value caused by process variation. In the actual manufacturing process, this variation value falls within about 15% of the pitch between two adjacent pixel units P. For example, when the distance between two adjacent pixel units P is 100 μm, the variation value is within ± 15 μm. That is, the second distance D2 that is relatively close to the center line L (that is, the orthographic projection line L ') and the second distance D2 that is relatively far from the center line L (that is, the orthographic projection line L') may exist within about ± 15 μm due to process variations. Variation value.

In addition, in a planar state, the difference ΔD2 between two adjacent second distances D2 in the extending direction of the second signal line 114 should follow the curve of the display panel 300. The decrease in the radius of curvature R 'increases, that is, the more curved the display panel 300 (the smaller the radius of curvature R'), the larger the difference ΔD2. In this way, it is helpful to achieve the effect of shielding light leakage according to different bending degrees. In this embodiment, the difference ΔD2 increases, for example, in a direction away from the center line L (that is, the orthographic projection line L '), that is, the difference ΔD2 is non-constant, but the present invention is not limited thereto. In another embodiment, the difference ΔD2 may be a fixed value.

In addition, as shown in FIG. 5A and FIG. 5B, the display panel 400 can adopt a design in which the first distance D1 is reduced in a direction away from the center line L (that is, the orthographic projection line L ') before being bent under the structure of the display panel 300. By increasing the area of the opening O far from the center line L, the aperture ratio of the display panel 400 is increased. Under such a design, before the display panel 400 is bent, the shielded area NT (such as the area where the first signal line 112 is located) far from the center line L may be exposed by the opening O (at this time, the first signal line 112 and the first signal line 112 are exposed). The first distance D1 between the edges S1 is considered negative).

In this embodiment, the amount of reduction of each first distance D1 is exactly equal to the amount of increase of the corresponding second distance D2. Therefore, the size W of the opening O relatively far from the center line L and the opening O relatively close to the center line L are substantially the same. In addition, after the display panel 400 is bent, in the orthographic projection on the reference plane RF, the first distance D1 is substantially the same, and the second distance D2 is substantially the same. It should be noted that the substantial similarity is not limited to the exact same, but should cover the variation value caused by process variation. In the actual manufacturing process, this variation value falls within about 15% of the pitch between two adjacent pixel units P.

With the above design, this embodiment can reduce the negative influence of the compensation mechanism on the aperture ratio, thereby helping the display panel 400 to improve the light leakage problem while taking into account the light transmittance and uniformity of the display panel 400.

In the display panels 100, 200, 300, and 400, the first signal line 112 is a scan line and the second signal line 114 is a data line, but the present invention is not limited thereto. 6A and 6B are schematic diagrams of a display panel after being bent according to other embodiments of the present invention, respectively. As shown in FIGS. 6A and 6B, according to different bending directions of the display panels 500 and 600, the first signal line 112 may also be a data line, and the second signal line 114 may be a scan line. At this time, the center line L is parallel to the data line. In addition, the first side and the second side of the opening of the unillustrated shielding layer are respectively parallel to the long side of the pixel unit P. Under this architecture, the problem of improving light leakage after the display panels 500 and 600 are bent can be referred to the foregoing, and will not be described again here.

In summary, the display panel of the embodiment of the present invention compensates the shielding area of the shielding layer before the display panel is bent according to the displacement between the shielding layer after the bending and the opaque element (such as the first signal line). In order to improve the problem of light leakage after the conventional display panel is bent. In addition, by increasing only the first distance and the second distance away from the center line, the negative effect of the compensation mechanism on the aperture ratio can be reduced, thereby helping the display panel to improve the light leakage problem while also Can take into account the light transmittance and uniformity of the display panel. In an embodiment, the aperture ratio of the display panel can be further increased by reducing the other of the first distance and the second distance away from the center line.

Although the present invention has been disclosed as above with the examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some modifications and retouching without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be determined by the scope of the attached patent application.

Claims (14)

A display panel has a center line parallel to at least one side of the display panel, and the side is a non-curved side. The display panel includes a first substrate including a plurality of first signal lines and Multiple second signal lines, the first signal lines are parallel to the center line, the second signal lines and the first signal lines are staggered with each other to define a plurality of pixel units; a second substrate is located at One side of the first substrate includes a shielding layer, the shielding layer has a plurality of openings, each of the openings exposes one of the pixel units, and each of the openings has a first side parallel to the centerline and a The second side, and the first side of each of the openings located on both sides of the center line is closer to the center line than the second side, wherein each of the first side and a first signal line adjacent to the first side are in a reference plane The orthographic projections on the first substrate are separated by a first distance, and the orthographic projections of each second side and an adjacent first signal line on the reference plane are separated by a second distance. The reference plane is the two non-curved portions of the first substrate. Where the edges are, and these first And the second distances increase only in a direction away from the center line; and a display medium layer is located between the first substrate and the second substrate, wherein the first distances and the second distances One of them increases away from the centerline, and the other of the first distances and the second distances are substantially the same. The display panel according to item 1 of the scope of patent application, wherein the display panel is in a flat state. According to the display panel described in item 1 of the patent application range, wherein the first distances are substantially the same, and the second distances increase in a direction away from the center line, the display panel is in a curved state, and the first substrate Located between the center of curvature of the display panel and the second substrate. According to the display panel described in item 1 of the patent application range, wherein the second distances are substantially the same, and the first distances increase in a direction away from the center line, the display panel is in a curved state, and the second substrate Located between the center of curvature of the display panel and the first substrate. The display panel according to item 1 of the scope of patent application, wherein the sizes of the openings decrease in a direction away from the center line. A display panel has a center line parallel to at least one side of the display panel, and the side is a non-curved side. The display panel includes a first substrate including a plurality of first signal lines and Multiple second signal lines, the first signal lines are parallel to the center line, the second signal lines and the first signal lines are staggered with each other to define a plurality of pixel units; a second substrate is located at One side of the first substrate includes a shielding layer, the shielding layer has a plurality of openings, each of the openings exposes one of the pixel units, and each of the openings has a first side parallel to the centerline and a The second side, and the first side of each of the openings located on both sides of the center line is closer to the center line than the second side, wherein each of the first side and a first signal line adjacent to the first side are in a reference plane The orthographic projections on the first substrate are separated by a first distance, and the orthographic projections of each second side and an adjacent first signal line on the reference plane are separated by a second distance. The reference plane is the two non-curved portions of the first substrate. Where the edges are, and these first And the second distances increase only in a direction away from the center line; and a display medium layer is located between the first substrate and the second substrate, wherein the first distances and the second distances One of them increases in a direction away from the centerline, the other of the first distances and the second distance decreases in a direction away from the centerline, and the display panel is in a flat state. The display panel according to item 6 of the scope of patent application, wherein the sizes of the openings are substantially the same. A display panel has a center line parallel to at least one side of the display panel, and the side is a non-curved side. The display panel includes a first substrate including a plurality of first signal lines and Multiple second signal lines, the first signal lines are parallel to the center line, the second signal lines and the first signal lines are staggered with each other to define a plurality of pixel units; a second substrate is located at One side of the first substrate includes a shielding layer, the shielding layer has a plurality of openings, each of the openings exposes one of the pixel units, and each of the openings has a first side parallel to the centerline and a The second side, and the first side of each of the openings located on both sides of the center line is closer to the center line than the second side, wherein each of the first side and a first signal line adjacent to the first side are in a reference plane The orthographic projections on the first substrate are separated by a first distance, and the orthographic projections of each second side and an adjacent first signal line on the reference plane are separated by a second distance. The reference plane is the Where the edges are, and these first And the second distances increase only in a direction away from the center line; and a display medium layer is located between the first substrate and the second substrate, wherein the display panel is in a flat state, and the first A distance increases in a direction away from the center line, and a difference between two first distances adjacent to each other in an extension direction of the second signal line increases as the curvature radius of the display panel decreases, or The second distances increase in a direction away from the center line, and the difference between two adjacent second distances in the extending direction of the second signal line increases as the curvature radius of the display panel decreases. The display panel according to item 8 of the scope of patent application, wherein a difference between two first distances adjacent to each other in an extension direction of the second signal line increases in a direction away from the center line, or in the second The difference between the two second distances adjacent to each other in the extension direction of the signal line increases away from the center line. The display panel according to item 1 of the scope of patent application, wherein the first signal lines are scanning lines, and the second signal lines are data lines, or the first signal lines are data lines, and the first The second signal line is a scanning line. A display panel has a center line parallel to at least one side of the display panel, and the side is a non-curved side. The display panel includes a first substrate including a plurality of first signal lines and Multiple second signal lines, the first signal lines are parallel to the center line, the second signal lines and the first signal lines are staggered with each other to define a plurality of pixel units; a second substrate is located at One side of the first substrate includes a shielding layer, the shielding layer has a plurality of openings, each of the openings exposes one of the pixel units, and each of the openings has a first side parallel to the centerline and a The second side, and the first side of each of the openings located on both sides of the center line is closer to the center line than the second side, wherein each of the first side and a first signal line adjacent to the first side are in a reference plane The orthographic projections on the first substrate are separated by a first distance, and the orthographic projections of each second side and an adjacent first signal line on the reference plane are separated by a second distance. The reference plane is the two non-curved portions of the first substrate. The plane of the edge; and a display Interstitial layer positioned between the first substrate and the second substrate, wherein the display panel has a curved shape, and the same substance of the plurality of first distance, and the plurality of second distance is substantially the same. The display panel according to item 11 of the scope of patent application, wherein the first substrate is located between a center of curvature of the display panel and the second substrate. The display panel according to item 11 of the application, wherein the second substrate is located between the center of curvature of the display panel and the first substrate. The display panel according to item 11 of the scope of patent application, wherein the first signal lines are scanning lines and the second signal lines are data lines, or the first signal lines are data lines, and the first The second signal line is a scanning line.