Display substrate, liquid crystal display panel and display device

Abstract

The present invention discloses a display substrate, a liquid crystal display panel and a display device to improve the problem of high black matrix transmittance and low process yield in the prior art. The display substrate has a display area, and the display substrate includes: a base substrate, and a black matrix located on one side of the base substrate; the black matrix includes: a first area corresponding to the display area, and a plurality of frame areas located outside the first area; at least one of the frame areas is provided with at least one linear first slit extending in the same direction as the frame area, and at least one linear second slit crossing the first slit.

Description

Technical Field

[0001] The present invention relates to the field of semiconductor technology, and in particular to a display substrate, a liquid crystal display panel and a display device. Background Art

[0002] The LCD panel of the prior art will show a whitening phenomenon at the edge of the panel when there is no backlight; under high-brightness backlight, the edge of the panel will show obvious light transmission; and under microscopic conditions, the light leakage of the black matrix can be clearly seen. In order to achieve the anti-static effect, the black matrix of the prior art will be provided with patterned gaps, but the setting of patterned gaps will cause the transmittance of the display panel to be high (its transmittance is about 30%), which is difficult to reduce, and the anti-static effect is poor, and the process yield is low. Summary of the invention

[0003] The present invention provides a display substrate, a liquid crystal display panel and a display device, so as to improve the problems of the prior art that the black matrix has high transmittance, poor antistatic effect and low process yield.

[0004] An embodiment of the present invention provides a display substrate having a display area, the display substrate comprising: a base substrate, a black matrix located on one side of the base substrate;

[0005] The black matrix includes: a first area corresponding to the display area, and a plurality of border areas located outside the first area; at least one of the border areas is provided with at least one straight first slit extending in the same direction as the border area, and at least one straight second slit intersecting the first slit.

[0006] In a possible implementation, the plurality of border regions include a first border region covered by a packaging material; and the other border regions except the first border region are all provided with the first gap and the second gap.

[0007] In a possible implementation manner, the number of the first gaps is smaller than the number of the second gaps.

[0008] In a possible implementation manner, each of the frame regions except the first frame region is provided with a first slit; the first slit runs through two opposite side edges of the black matrix.

[0009] In a possible implementation manner, two first slits are provided in each of the frame regions except the first frame region; and the first slits penetrate two opposite side edges of the black matrix.

[0010] In a possible implementation manner, an end portion of the second slit facing the first region contacts the first slit of the two first slits that is closer to the first region.

[0011] In a possible implementation manner, the first area is provided with a plurality of pixel openings;

[0012] The number of the second slits set in each of the other border areas except the first border area is the same as the number of rows of the pixel openings; or, the number of the second slits set in each of the other border areas except the first border area is the same as the number of columns of the pixel openings.

[0013] In a possible implementation manner, the first gaps of the two border areas connected to each other intersect at a region where the two border areas meet.

[0014] In a possible implementation manner, the first slit farthest from the first region in the frame region is used as a first frame slit, and a distance between the first frame slit and an edge of the substrate is 80 μm to 120 μm.

[0015] In a possible implementation manner, in the same frame region, a distance between adjacent first slits is 80 μm to 120 μm.

[0016] In a possible implementation manner, the width of the first gap in a direction perpendicular to the extension direction is 8 μm to 12 μm; the width of the second gap in a direction perpendicular to the extension direction is 8 μm to 12 μm.

[0017] An embodiment of the present invention further provides a liquid crystal display panel, comprising the display substrate provided by the embodiment of the present invention.

[0018] An embodiment of the present invention further provides a display device, comprising the liquid crystal display panel provided by the embodiment of the present invention.

[0019] In a possible implementation, the plurality of border regions include a first border region;

[0020] The display device further includes: a packaging material, wherein the packaging material covers the first frame area of ​​the black matrix.

[0021] The beneficial effects of the embodiments of the present invention are as follows: In the embodiments of the present invention, the black matrix includes: a first area corresponding to the display area, and a plurality of border areas located outside the first area, at least one border area is provided with at least one straight first slit extending in the same direction as the border area, and at least one straight second slit crossing the first slit, the first slit and the second slit crossing horizontally and vertically can have a lower light transmittance while ensuring the anti-static effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a black matrix provided by an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the structure of another black matrix provided by an embodiment of the present invention;

[0024] Figure 3 for Figure 1 Enlarged schematic at the dotted circle. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0026] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] In order to keep the following description of the embodiments of the present disclosure clear and concise, the present disclosure omits detailed descriptions of well-known functions and well-known components.

[0028] An embodiment of the present invention provides a display substrate having a display area, the display substrate comprising: a base substrate, a black matrix located on one side of the base substrate;

[0029] See also Figure 1 The black matrix includes: a first area S1 corresponding to the display area, and a plurality of frame areas S2 located outside the first area S1. Specifically, for example, Figure 1 As shown, the plurality of frame regions S2 may be respectively a first frame region S21 and a second frame region S22 extending along a first direction AB, and a third frame region S23 and a fourth frame region S24 extending along a second direction CD; at least one frame region S2 is provided with at least one linear first slit F1 extending in the same direction as the frame region, the first slit F1 extending in the same direction as the frame region in which it is located, and at least one linear second slit F2 intersecting the first slit F1. Specifically, the second slit F2 may extend in a direction perpendicular to the first slit F1.

[0030] In an embodiment of the present invention, the black matrix includes: a first area S1 corresponding to the display area, and a plurality of frame areas S2 located outside the first area S1, at least one frame area S2 is provided with at least one straight first slit F1 extending in the same direction as the frame area, and at least one straight second slit F2 crossing the first slit F1, the first slit F1 and the second slit F2 crossing horizontally and vertically can have a lower light transmittance while ensuring the antistatic effect, and when the size of the black matrix is ​​large and the length of the first slit is long, the second slit crossing the first slit can avoid the problem that the first slit is easily affected by particles (Particles) or exposure during the manufacturing process, causing the first slit (Slit) to close, resulting in a poor antistatic effect or even ineffectiveness.

[0031] In a specific implementation, since part of the frame area of ​​the black matrix will be covered by other structures of the display device, for example, the first frame area S21 of the black matrix is ​​covered by the packaging material and will not be exposed to the outside world, it is not necessary to set a gap in the side frame area, and for other frame areas exposed to the outside world, for example, the second frame area S22, the third frame area S23, and the fourth frame area S24 can all be provided with the first gap F1 and the second gap F2, see Figure 1 shown.

[0032] In specific implementation, combined with Figure 1As shown, the number of the first slits F1 is less than the number of the second slits F2. In the embodiment of the present invention, the number of the first slits F1 is less than the number of the second slits F2, that is, the number of the longer slits is less than the number of the shorter slits. Compared with setting more and longer first slits F1, the black matrix can have a lower light transmittance while having an antistatic effect.

[0033] In one possible implementation, see Figure 2 As shown, a first slit F1 is provided in each frame region except the first frame region S21; the first slit F1 runs through two opposite sides of the black matrix. Specifically, for example, the first slit F1 in the third frame region S23 runs through two opposite upper and lower sides of the black matrix, that is, one end of the first slit F1 contacts the upper side of the black matrix, and the other end contacts the lower side of the black matrix. For another example, the first slit F1 in the second frame region S22 runs through two opposite left and right sides of the black matrix, that is, one end of the first slit F1 contacts the left side of the black matrix, and the other end contacts the right side of the black matrix. In the embodiment of the present invention, a first slit F1 is provided in each frame region except the first frame region S21, and the light transmittance is low when having a certain antistatic effect.

[0034] In one possible implementation, combining Figure 1 As shown, two first slits F1 are provided in each frame region except the first frame region S21; the first slit F1 runs through the two opposite sides of the black matrix. Specifically, for example, the first slit F1 in the third frame region S23 runs through the two opposite upper and lower sides of the black matrix, that is, one end of the first slit F1 contacts the upper side of the black matrix, and the other end contacts the lower side of the black matrix. For another example, the first slit F1 in the second frame region S22 runs through the two opposite left and right sides of the black matrix, that is, one end of the first slit F1 contacts the left side of the black matrix, and the other end contacts the right side of the black matrix. In the embodiment of the present invention, two first slits F1 are provided in each frame region except the first frame region S21. When the antistatic efficiency reaches the preset requirement, its transmittance is 11.8% (much less than the minimum transmittance of 29.2% required by the prior art when meeting the preset antistatic requirement), which greatly reduces the risk of electrostatic breakdown and has a lower transmittance.

[0035] In one possible implementation, combining Figure 1 As shown, the end of the second slit F2 facing the first region S1 contacts the first slit F1 of the two first slits F1 close to the first region S1. Specifically, for example, Figure 1In the third frame area S23, the first slit F1 on the right side is closer to the first area S1, and the ends of each second slit F2 facing the first area S1 are in contact with the first slit F1 on the right side. In the embodiment of the present invention, the ends of the second slits F2 facing the first area S1 are in contact with the first slit F1 of the two first slits F1 that are closer to the first area S1, which can make the black matrix have a lower transmittance while having the same antistatic effect compared to the second slit F2 extending out of the right side of the first slit F1 (taking the third frame area S23 as an example).

[0036] In one possible implementation, combining Figure 1 and Figure 2 As shown, the first region S1 is provided with a plurality of pixel openings X; the number of second slits F2 provided in each frame region other than the first frame region S21 is the same as the number of rows of the pixel openings X; or, the number of second slits F2 provided in each frame region other than the first frame region S21 is the same as the number of columns of the pixel openings X. Specifically, for example, the number of second slits F2 provided in the third frame region S23 is the same as the number of rows of the pixel openings X; for another example, the number of second slits F2 provided in the second frame region S22 is the same as the number of columns of the pixel openings X. Specifically, for example, the pixel openings X have 2160 rows, and the number of second slits F2 provided in the third frame region S23 can be set to 2160.

[0037] In specific implementation, combined with Figure 1 and Figure 2 As shown, the first gaps F1 of the two connected frame areas intersect at the area where the two frame areas meet. Specifically, for example, the first gap F1 of the second frame area S22 and the first gap F1 of the fourth frame area S24 intersect at the area where the second frame area S22 meets the fourth frame area S24.

[0038] In one possible implementation, combining Figure 1 As shown, the first slit F1 farthest from the first area S1 in the border area S2 is used as the first border slit FZ, and the spacing d1 between the first border slit FZ and the edge Y of the substrate is 80μm to 120μm. Specifically, for example, the spacing d1 between the first border slit FZ and the edge Y of the substrate is 100μm. In the embodiment of the present invention, since the black matrix and the substrate need to be cut as one piece later, and there is a process error in the cutting (specifically, the process error is approximately 100μm), in order to avoid the first slit F1 being cut off during the cutting process and failing to play an antistatic role, the spacing between the first border slit and the edge of the substrate can be set to 80μm to 120μm, which can avoid the first slit F1 being cut due to the cutting error of the cutting process and failing to play an effective role.

[0039] In one possible implementation, combining Figure 1 As shown, in the same frame area, the spacing d2 between adjacent first slits F1 is 80 μm to 120 μm. Specifically, the spacing d2 between adjacent first slits F1 may be 100 μm. Specifically, for example, in the fourth frame area S24, the spacing d2 between adjacent first slits F1 is 100 μm.

[0040] In one possible implementation, combining Figure 1 and Figure 3 As shown, Figure 3 for Figure 1 In the enlarged structural diagram at the dotted ellipse, the width d3 of the first gap F1 perpendicular to the extension direction is 8 μm to 12 μm; the width d4 of the second gap F2 perpendicular to the extension direction is 8 μm to 12 μm.

[0041] Specifically, the display substrate provided in the embodiment of the present invention may be a color filter substrate.

[0042] An embodiment of the present invention further provides a liquid crystal display panel, comprising the display substrate provided by the embodiment of the present invention.

[0043] An embodiment of the present invention further provides a display device, including the liquid crystal display panel provided by the embodiment of the present invention.

[0044] The beneficial effects of the embodiments of the present invention are as follows: In the embodiments of the present invention, the black matrix includes: a first area S1 corresponding to the display area, and a plurality of border areas S2 located outside the first area S1, at least one border area S2 is provided with at least one straight first slit F1 extending in the same direction as the border area, and at least one straight second slit F2 crossing the first slit F1, the first slit F1 and the second slit F2 crossing horizontally and vertically can have a lower light transmittance while ensuring the anti-static effect.

[0045] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A display substrate having a display area, characterized in that: The display substrate comprises: a base substrate, a black matrix located on one side of the base substrate; The black matrix includes: a first area corresponding to the display area, and a plurality of frame areas located outside the first area; at least one of the frame areas is provided with at least one linear first slit extending in the same direction as the frame area, and at least one linear second slit intersecting the first slit; The first area is provided with a plurality of pixel openings; The plurality of frame regions include a first frame region and a second frame region extending along a first direction, and a third frame region and a fourth frame region extending along a second direction; The number of the second slits provided in the second frame region is the same as the number of columns of the pixel openings; or, The number of the second slits arranged in the third frame area is the same as the number of rows of the pixel openings.

2. The display substrate according to claim 1, wherein: The first frame area is covered by a packaging material; and each of the frame areas except the first frame area is provided with the first gap and the second gap.

3. The display substrate according to claim 2, wherein: The number of the first slits is smaller than the number of the second slits.

4. The display substrate according to claim 3, wherein: A first slit is disposed in each of the frame regions except the first frame region; the first slit runs through two opposite sides of the black matrix.

5. The display substrate according to claim 3, wherein: Two first slits are arranged in each of the frame regions except the first frame region; the first slits penetrate two opposite side edges of the black matrix.

6. The display substrate according to claim 5, wherein: An end of the second slit facing the first region contacts one of the two first slits that is close to the first region.

7. The display substrate according to claim 1, wherein: The first gaps of the two mutually connected frame areas intersect at the area where the two frame areas meet.

8. The display substrate according to claim 1, wherein: The first slit farthest from the first region in the frame region is used as a first frame slit, and a distance between the first frame slit and the edge of the base substrate is 80 μm to 120 μm.

9. The display substrate according to claim 8, wherein: In the same frame area, the spacing between adjacent first gaps is 80 μm to 120 μm.

10. The display substrate according to claim 1, wherein: The width of the first slit in a direction perpendicular to the extension direction is 8 μm to 12 μm; the width of the second slit in a direction perpendicular to the extension direction is 8 μm to 12 μm.

11. A liquid crystal display panel, characterized in that: Comprising the display substrate as described in any one of claims 1-10.

12. A display device, characterized in that: Comprising the liquid crystal display panel as claimed in claim 11.

13. The display device according to claim 12, wherein: The plurality of frame regions include a first frame region; The display device further includes: a packaging material, wherein the packaging material covers the first frame area of ​​the black matrix.

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