CN214202004U - Display panel, light shield for manufacturing display panel and display device - Google Patents
Display panel, light shield for manufacturing display panel and display device Download PDFInfo
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- CN214202004U CN214202004U CN202022515156.7U CN202022515156U CN214202004U CN 214202004 U CN214202004 U CN 214202004U CN 202022515156 U CN202022515156 U CN 202022515156U CN 214202004 U CN214202004 U CN 214202004U
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Abstract
The application discloses a display panel, a light shield for manufacturing a light shield layer and a display device, wherein the display panel comprises a first substrate and a second substrate arranged opposite to the first substrate; a spacer is arranged on one surface of the first substrate close to the second substrate; the first substrate is divided into a display area and a non-display area, and the non-display area is arranged around the display area; the spacer comprises a main spacer and a first subsidiary spacer, the height of the main spacer is higher than that of the first subsidiary spacer; the display area and the non-display area are both uniformly provided with the main spacers; the display area is uniformly provided with the first auxiliary spacers; the spacers further comprise second auxiliary spacers uniformly arranged in the non-display area, the height of the tops of the second auxiliary spacers is lower than that of the tops of the first auxiliary spacers, and the alignment layers are prevented from flowing back to the tops of the second auxiliary spacers to be stacked and thickened, so that the thickness of a liquid crystal box is not uniform, and light leakage is caused.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel, a light shield for manufacturing the display panel and a display device.
Background
In the field of Thin Film Transistor Liquid Crystal Display (TFT-LCD), a layer of Spacer (PS) is usually fabricated on a color filter substrate to support the Liquid Crystal Cell thickness (Cell Gap) between an array substrate and the color filter substrate, the area ratio of the PS is generally not more than 2% of that of an AA region (Display region of a panel), the design of the PS area density ratio (ratio) has a great influence on the Display of the panel, the PS ratio is too large, the panel is not easily recovered when subjected to an external force, and light leakage is easily generated; if the PS ratio is too small, uniformity of Cell Gap cannot be ensured, and the optical characteristics of the panel are affected.
Since the cell thickness of the non-display region increases due to the thickening of the alignment layer at the top of the spacer caused by the reflow (reflow) effect of the alignment liquid (PI liquid) at the edge of the display region, light leakage occurs, and thus how to improve the problem of light leakage caused by the increase of the cell thickness due to the reflow of the alignment liquid becomes an urgent issue to be solved.
SUMMERY OF THE UTILITY MODEL
The application aims to provide a display panel, a light shield for manufacturing the display panel and a display device, and solves the problem of light leakage caused by high box thickness caused by backflow of alignment liquid.
The application discloses a display panel, which comprises a first substrate and a second substrate arranged opposite to the first substrate; a spacer is arranged on one surface of the first substrate close to the second substrate; the first substrate is divided into a display area and a non-display area, and the non-display area is arranged around the display area; the spacer comprises a main spacer and a first subsidiary spacer, the height of the main spacer is higher than that of the first subsidiary spacer; the main spacers are uniformly arranged in the display area and the non-display area; the first auxiliary spacers are uniformly arranged in the display area; the spacers further include second subsidiary spacers disposed uniformly in the non-display region; the height of the top of the second sub-spacer is lower than the height of the top of the first sub-spacer.
Optionally, the height of the second sub spacer is equal to the height of the first sub spacer, and the height of the contact surface between the first substrate and the second sub spacer is lower than the height of the contact surface between the first substrate and the first sub spacer.
Optionally, the display panel further includes a light-shielding layer, the light-shielding layer is disposed on the first substrate, the second auxiliary spacer and the first auxiliary spacer are disposed on the light-shielding layer, and the light-shielding layer is provided with a groove corresponding to the second auxiliary spacer.
Optionally, the thickness of the light-shielding layer corresponding to the second auxiliary spacer is smaller than the thickness of the light-shielding layer corresponding to the first auxiliary spacer, so as to form the groove.
Optionally, the display panel further includes a light-shielding layer, the first auxiliary spacer is disposed on the light-shielding layer, the light-shielding layer is disposed on the first substrate and the second substrate, respectively, and the light-shielding layer disposed on the first substrate is hollowed out corresponding to the first auxiliary spacer.
Optionally, a height of a contact surface between the first substrate and the second sub spacer is lower than a height of a contact surface between the first substrate and the first sub spacer, and a height of the second sub spacer is lower than a height of the first sub spacer.
Optionally, the top width of the second sub-spacer is less than the top width of the first sub-spacer.
Optionally, the display panel further includes an alignment layer formed on the first substrate and covering the second sub spacer and the first sub spacer, and a thickness of the alignment layer covering a top of the second sub spacer is smaller than a thickness of the alignment layer covering a top of the first sub spacer.
The application also discloses a light shield for manufacturing the display panel, wherein the light shield is used for manufacturing a light shielding layer of the display panel and comprises a light shielding area, a semi-transparent area and a full-transparent area; the semi-transparent area forms a light shielding layer corresponding to the position of the second auxiliary spacer; the shading area region forms a shading layer corresponding to the position outside the position of the second auxiliary spacer; and the light transmittance of the semi-transparent region is lower than that of the full-transparent region.
The application also discloses a display device, which comprises the display panel and a driving circuit for driving the display panel.
For the scheme that the heights of the tops of the auxiliary spacers are the same as the heights of the tops of the second auxiliary spacers, the top height of the second auxiliary spacers is set to be lower than the top height of the auxiliary spacers, so that even if the height of the second auxiliary spacers is increased due to backflow of alignment liquid at the non-display area, the increased height of the alignment liquid is offset by the lower top height of the second auxiliary spacers, the problem that the final height of the top is too high after the thickness of the alignment layer is added to the second auxiliary spacers can be improved or even avoided, and the problem that the light leakage is caused by the fact that the thickness of a box of the non-display area is too large is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
fig. 1 is a schematic diagram of a display device according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a spacer of a display area of a display panel according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a spacer distribution of a display panel according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a spacer of a non-display area of a display panel according to another embodiment of the present application;
FIG. 5 is a schematic view of a spacer of a non-display area of a display panel according to an embodiment of the present application;
FIG. 6 is a schematic diagram of a spacer of a non-display area of a display panel according to yet another embodiment of the present application;
fig. 7 is a schematic diagram of a light-shielding layer in a non-display area of a display panel according to another embodiment of the present application.
100, a display panel; 200. a first substrate; 210. a display area; 220. a non-display area; 230. a spacer; 231. a primary spacer; 232. a first secondary spacer; 233. a second secondary spacer; 240. a light-shielding layer; 250. an alignment layer; 260. a liquid crystal layer; 270. hollowing out; 300. a second substrate; 400. a drive circuit; 500. a display device.
Detailed Description
It is to be understood that the terminology, the specific structural and functional details disclosed herein are for the purpose of describing particular embodiments only, and are representative, but that the present application may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or as implicitly indicating the number of technical features indicated. Thus, unless otherwise specified, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "plurality" means two or more. The terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that one or more other features, integers, steps, operations, elements, components, and/or combinations thereof may be present or added.
Further, terms of orientation or positional relationship indicated by "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, are described based on the orientation or relative positional relationship shown in the drawings, are simply for convenience of description of the present application, and do not indicate that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.
Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, fixed connections, removable connections, and integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The present application is described in detail below with reference to the figures and alternative embodiments.
As shown in fig. 1 to 4, as an embodiment of the present application, a display device 500 is disclosed, which includes a display panel 100 and a driving circuit 400 for driving the display panel 100. The display panel 100 includes a first substrate 200 and a second substrate 300 disposed opposite to the first substrate 200; wherein, a spacer 230 is disposed on one side of the first substrate 200 close to the second substrate 300; the first substrate 200 is divided into a display area 210 and a non-display area 220, and the non-display area 220 is disposed around the display area 210; the spacer 230 includes a main spacer 231 and a first subsidiary spacer 232, the height (H2) of the main spacer 231 is higher than the height (H1) of the first subsidiary spacer 232, the width (D2) of the bottom of the main spacer 231 is smaller than the width (D1) of the bottom of the first subsidiary spacer 232; the display region 210 and the non-display region 220 are uniformly provided with the main spacers 231, and the display region 210 is uniformly provided with the auxiliary spacers 232; the spacers 230 further include second subsidiary spacers 233, the second subsidiary spacers 233 being uniformly disposed in the non-display region 220; the height (h3) of the top of the second sub spacer 233 is lower than the height (h1) of the top of the first sub spacer 232, so that there is no concern of light leakage due to uneven thickness of the liquid crystal cell caused by too high height of the non-display region 220.
Further, the display panel 100 further includes an alignment layer 250 formed by reflowing an alignment liquid, the alignment layer 250 is formed on the first substrate 200 and covers the second auxiliary spacer 233 and the auxiliary spacer 232, and a thickness of the alignment layer 250 covering a top end of the second auxiliary spacer 232 is smaller than a thickness of the alignment layer 250 covering a top end of the first auxiliary spacer 232, so that there is no concern that a non-display area 220 is too high to cause uneven thickness of a liquid crystal cell and cause light leakage.
In addition, in order to reduce the height of the top of the second auxiliary spacer 233 (H3), the height of the second auxiliary spacer 233 (H1) is equal to the height of the first auxiliary spacer (H3), the height of the bottom of the second auxiliary spacer is lower than the height of the bottom of the first auxiliary spacer, the height of the second auxiliary spacer (H3) is equal to the height of the first auxiliary spacer (H1), the height of the contact surface between the first substrate and the second auxiliary spacer is lower than the height of the contact surface between the first substrate and the first auxiliary spacer, and thus the height of the top of the second auxiliary spacer is still lower than the height of the top of the auxiliary spacer, thereby improving the situation that the alignment layer stacked on the top of the auxiliary spacer causes uneven box thickness; the height of the second secondary spacer and the secondary spacer itself are equal, so that the standing positions of the second secondary spacer and the secondary spacer have a height difference, so that the height of the top of the second secondary spacer is lower than the height of the top of the secondary spacer; the mask used to form the spacers need not be replaced.
The display panel 100 further includes a light-shielding layer 240 disposed on the first substrate, the second sub spacer 233 and the first sub spacer 232 are disposed on the light-shielding layer 240, and the light-shielding layer 240 is disposed with a groove corresponding to the second sub spacer 233; the second auxiliary spacers 233 and the auxiliary spacers 232 are disposed corresponding to the light-shielding layer to facilitate display uniformity, and the groove may be formed by adjusting the thickness of the light-shielding layer, or by adjusting the thickness of other layers, or by adjusting the light-shielding layer and other layers simultaneously.
The light-shielding layer 240 corresponding to the second sub-spacers 233 has a thickness smaller than that of the light-shielding layer corresponding to the first sub-spacers 232, and the groove is formed, the light-shielding layer is the layer closest to the spacers, so the groove is formed by adjusting the thickness of the light-shielding layer, and the width of the groove formed in addition is larger than the width of the bottom of the second sub-spacers, so as to accommodate the second sub-spacers.
Correspondingly, the photomask used for manufacturing the light shielding layer comprises a light shielding area, a semi-transparent area and a full-transparent area, wherein the light shielding area forms the light shielding layer corresponding to the position other than the position of the second auxiliary spacer; the semi-transparent area forms a light shielding layer corresponding to the position of the second auxiliary spacer; and the light transmittance of the semi-transparent region is lower than that of the full-transparent region.
As shown in fig. 4, the display panel further includes a light-shielding layer 240, the height of the top of the first sub-spacer is improved by changing the thickness of the light-shielding layer, the spacers 230 are disposed on the light-shielding layer 240, the thickness of the light-shielding layer corresponding to the second sub-spacer is smaller than the thickness of the light-shielding layer corresponding to the first sub-spacer, and then the heights of the sub-spacers and the alignment layer as a whole are lower than the previous heights, so that the heights of the sub-spacers and the alignment layer as a whole are prevented from being too high, which may cause uneven cell thickness.
The corresponding photomask for manufacturing the light shielding layer comprises: the region of the photomask corresponding to the second sub spacer is a half mask, and the region of the photomask corresponding to the first sub spacer is a full mask, so that the thickness of the light shielding layer corresponding to the formation of the second sub spacer is smaller than the thickness of the light shielding layer corresponding to the formation of the first sub spacer.
Further, as shown in fig. 5, the height of the contact surface between the first substrate and the second auxiliary spacer is lower than the height of the contact surface between the first substrate and the first auxiliary spacer, and the height of the second auxiliary spacer (H3) is lower than the height of the first auxiliary spacer (H1), the alignment liquid backflow is mainly accumulated at the edge of the non-display area 220 close to the display area, so the height of the auxiliary spacer 232 of the non-display area 220 is set lower than the height of the first auxiliary spacer, and by adjusting the heights of the second auxiliary spacer and the second auxiliary spacer at the same time, the height of the top of the second auxiliary spacer can be adjusted to be shorter, so that the height of the whole stacked liquid crystal is lower, and thus the liquid crystal cell thickness unevenness caused by the excessive height of the stacked alignment liquid is avoided.
In order to reduce the phenomenon that the alignment liquid is deposited on the top of the second sub spacer to form an excessively thick alignment layer, the top width (d3) of the second sub spacer is smaller than the top width (d1) of the first sub spacer, so that the alignment liquid is not easily deposited on the top of the sub spacer, the formed alignment layer is thin, the overall height of the sub spacer and the alignment layer can be reduced, and the phenomenon that the light leakage is caused by uneven thickness of the cell when the cell is touched due to excessive height can be prevented.
The size of the top width is closely related to the stacking height of the alignment liquid, if the top width is larger, the alignment liquid is stacked thickly, and the top width of the second auxiliary spacer is set to be smaller than the top width of the auxiliary spacer, so that the stacking height of the alignment liquid can be reduced; the height of the top of the second auxiliary spacer is reduced, the stacking height of the alignment liquid is reduced at the same time, and the top height plus the final top height reached after the stacking height can be easily adjusted to a required height.
As shown in fig. 6 to 7, as another embodiment of the present application, different from the above embodiment, the display panel 100 further includes a light shielding layer 250, the light shielding layer 250 is disposed on the first substrate 200, the auxiliary spacers 232 of the display region 210 are disposed on the light shielding layer 250, the light shielding layer 250 is hollowed out at positions corresponding to the auxiliary spacers 232 of the non-display region 220, and then the height of the top of the second auxiliary spacer 233 corresponding to the hollowed out portions 270 is reduced again, so that the overall height formed after the alignment liquid reflows does not affect the entire cell thickness, and the uneven cell thickness caused by the excessively high height of the top of the second auxiliary spacer 233 is avoided.
Correspondingly, the light shielding layer is respectively arranged on the first substrate and the second substrate, and the light shielding layer arranged on the first substrate is hollowed out corresponding to the first auxiliary spacer; the area with the hollowed light shielding layer is a full mask corresponding to the light shade and is full light-transmitting, namely the position corresponding to the second auxiliary spacer is not provided with the light shielding layer, namely the area is in a hollowed state, so that the height of the top of the second auxiliary spacer is lower than that of the top of the first auxiliary spacer, and the phenomenon that the box thickness is uneven due to the fact that the height of the top of a non-display area is too high, and light leakage is caused is avoided; it should be noted that, in order to ensure the light transmittance of the panel, the light-shielding layer 250 is disposed on the second substrate 300 corresponding to the first auxiliary spacer 232 of the non-display area 220, and no hollow is disposed.
The technical scheme of the application can be widely applied to various display panels, such as a TN (Twisted Nematic) display panel, an IPS (In-Plane Switching) display panel, a VA (Vertical Alignment) display panel, and an MVA (Multi-Domain Vertical Alignment) display panel.
The foregoing is a more detailed description of the present application in connection with specific alternative embodiments, and the specific implementations of the present application are not to be considered limited to these descriptions. For those skilled in the art to which the present application pertains, several simple deductions or substitutions may be made without departing from the concept of the present application, and all should be considered as belonging to the protection scope of the present application.
Claims (10)
1. A display panel, comprising:
a first substrate: and
a second substrate disposed opposite to the first substrate;
a spacer is arranged on one surface of the first substrate facing the second substrate;
the first substrate is divided into a display area and a non-display area, and the non-display area is arranged around the display area;
the spacer comprises a main spacer and a first subsidiary spacer, the height of the main spacer is higher than that of the first subsidiary spacer;
the main spacers are uniformly arranged in the display area and the non-display area; the first auxiliary spacers are uniformly arranged in the display area;
the spacers further include second subsidiary spacers disposed uniformly in the non-display region;
the height of the top of the second sub-spacer is lower than the height of the top of the first sub-spacer.
2. The display panel according to claim 1, wherein the height of the second sub spacer is equal to the height of the first sub spacer, and the height of the contact surface between the first substrate and the second sub spacer is lower than the height of the contact surface between the first substrate and the first sub spacer.
3. The display panel according to claim 2, wherein the display panel further comprises a light-shielding layer, the light-shielding layer is disposed on the first substrate, the second sub spacer and the first sub spacer are disposed on the light-shielding layer, and the light-shielding layer is provided with a groove corresponding to the second sub spacer.
4. The display panel according to claim 3, wherein the light-shielding layer has a thickness corresponding to the second sub spacer smaller than a thickness of the light-shielding layer corresponding to the first sub spacer, and the groove is formed.
5. The display panel according to claim 1, wherein the display panel further comprises a light-shielding layer, the light-shielding layer is disposed on the first substrate and the second substrate, and the light-shielding layer disposed on the first substrate is hollowed out corresponding to the first auxiliary spacer.
6. The display panel of claim 1, wherein a height of a contact surface of the first substrate with the second sub spacer is lower than a height of a contact surface of the first substrate with the first sub spacer, and a height of the second sub spacer is lower than a height of the first sub spacer.
7. The display panel of any of claims 1-6, wherein the top width of the second sub spacer is less than the top width of the first sub spacer.
8. The display panel of claim 1, further comprising an alignment layer formed on the first substrate and covering the second sub spacer and the first sub spacer, wherein a thickness of the alignment layer covering a top of the second sub spacer is smaller than a thickness of the alignment layer covering a top of the first sub spacer.
9. A mask for fabricating the display panel according to claim 4, wherein the mask is used for fabricating a light-shielding layer of the display panel, the mask comprising:
a full-transparent area;
a light shielding region for forming a light shielding layer corresponding to a position other than the position of the second subsidiary spacer; and
the semi-transparent area is used for forming a light shielding layer corresponding to the position of the second auxiliary spacer;
and the light transmittance of the semi-transparent region is lower than that of the full-transparent region.
10. A display device comprising the display panel according to any one of claims 1 to 8 and a driving circuit which drives the display panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022515156.7U CN214202004U (en) | 2020-11-03 | 2020-11-03 | Display panel, light shield for manufacturing display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022515156.7U CN214202004U (en) | 2020-11-03 | 2020-11-03 | Display panel, light shield for manufacturing display panel and display device |
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| CN214202004U true CN214202004U (en) | 2021-09-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112485949A (en) * | 2020-11-04 | 2021-03-12 | 滁州惠科光电科技有限公司 | Display panel and display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112485949A (en) * | 2020-11-04 | 2021-03-12 | 滁州惠科光电科技有限公司 | Display panel and display device |
| CN112485949B (en) * | 2020-11-04 | 2022-07-08 | 滁州惠科光电科技有限公司 | Display panel and display device |
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