Display substrate and display device

Abstract

The application relates to a display substrate and a display device. The display substrate comprises a substrate and a driving array layer on the substrate, the display substrate comprises a plurality of non-pixel areas, the substrate is provided with a groove corresponding to the non-pixel area, and a refrigeration structure is arranged in the groove and used for absorbing heat generated by the driving array layer. The application realizes dynamic adjustment of the panel temperature by arranging the groove in the substrate corresponding to the non-pixel area and arranging the refrigeration structure in the groove to absorb the heat, so that the high temperature does not affect the display effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the display technical field, in particular to a display substrate and a display device. BACKGROUND

[0002] With the development of reality technology, liquid crystal display devices are widely used in life. In the work of liquid crystal display panel, the backlight source and the driving circuit will generate a large amount of heat, and the temperature of the liquid crystal panel working for a long time can reach 80℃ or above. This phenomenon is particularly evident on a 55-inch large panel. In the liquid crystal display device, long-term continuous high-temperature work will cause damage to the internal circuit components and polarizing plates, thereby affecting the liquid crystal display picture.

[0003] The heat dissipation problem also exists in organic light emitting diodes (OLED). OLED devices have the advantages of self-emission, high contrast, wide viewing angle, low power consumption and thinness, and are widely used in display screens and lamps and other fields. However, OLED devices generate a large amount of heat during operation, which will cause the performance of OLED devices to decline, the service life to be shortened, and even damage if the heat is not dissipated in time. SUMMARY

[0004] The present application aims to provide a display substrate and a display device to solve the technical problems of the related art that the display device cannot dissipate heat, affecting the display performance and shortening the service life.

[0005] In a first aspect, an embodiment of the present application provides a display substrate, comprising a substrate and a driving array layer on the substrate, the display substrate comprising a plurality of pixel regions and a non-pixel region between adjacent pixel regions, the substrate being provided with a plurality of grooves corresponding to the non-pixel region, and each groove being provided with a refrigeration structure for absorbing heat generated by the driving array layer.

[0006] In a possible implementation, the refrigeration structure comprises a shell and a refrigerant in the shell, the refrigerant changing its state after absorbing the heat generated by the driving array layer; when the temperature of the driving array layer is higher than a preset temperature, the refrigerant is in a gaseous state; and when the temperature of the substrate is lower than the preset temperature, the refrigerant is in a liquid state.

[0007] In a possible implementation, the grooves are located on the side of the substrate facing the driving array layer and / or on the side of the substrate facing away from the driving array layer.

[0008] In a possible implementation, the display substrate further includes a color film substrate and a liquid crystal layer, the color film substrate is arranged on the light exit side of the substrate substrate, the liquid crystal layer is arranged between the substrate substrate and the color film substrate, the color film substrate includes a plurality of color resistance units and a light shielding unit for separating adjacent color resistance units, and a projection of the light shielding unit on the substrate substrate covers the groove.

[0009] In a possible implementation, the display substrate further includes a planar layer, when the groove is located on the side of the substrate substrate facing the drive array layer, the planar layer is located between the drive array layer and the substrate substrate, and covers the substrate substrate.

[0010] In a possible implementation, the groove includes an opening end, and the display substrate further includes a planar layer, when the groove is located on the side of the substrate substrate facing the drive array layer, the planar layer fills the opening end of the groove, so that an upper surface of the planar layer is flush with an upper surface of the substrate substrate.

[0011] In a possible implementation, the display substrate further includes a plurality of light emitting regions arranged on the substrate substrate and a pixel definition layer for separating adjacent light emitting regions, the light emitting region includes an anode layer, a cathode layer opposite to the anode layer, and a light emitting layer between the anode layer and the cathode layer, and a projection of the pixel definition layer on the substrate substrate covers the groove.

[0012] In a possible implementation, the groove further includes a bottom, and an area of a projection of the refrigeration structure on the bottom is greater than an area of a projection of the opening end on the bottom and less than an area of the bottom.

[0013] In a possible implementation, the display substrate further includes an optical adhesive arranged in the groove, for fixing the refrigeration structure in the groove.

[0014] In a second aspect, an embodiment of the present application provides a display device, including the display substrate as mentioned in the first aspect.

[0015] The display substrate and the display device provided by the embodiments of the present application include a substrate substrate and a drive array layer arranged on the substrate substrate, the display substrate includes a plurality of non-pixel regions, the substrate substrate is provided with a groove corresponding to the non-pixel region, and a refrigeration structure is arranged in the groove to absorb heat generated by the drive array layer. The present application realizes dynamic adjustment of panel temperature by arranging the groove in the substrate substrate corresponding to the non-pixel region and arranging the refrigeration structure in the groove to absorb heat, so as to prevent high temperature from affecting the display effect. BRIEF DESCRIPTION OF DRAWINGS

[0016] The features, advantages, and technical and artistic effects of the example embodiments of the present application will be described below with reference to the accompanying drawings. In the drawings, like reference numerals refer to like elements throughout. The accompanying drawings are not drawn to scale, and some parts are exaggerated for the sake of clarity, and the layer thicknesses of some parts are exaggerated for the sake of clarity. The drawings are merely intended for illustrative purposes, and the relative positions of the parts are not intended to represent actual proportions.

[0017] Figure 1 A structure schematic diagram of a first display substrate provided by the first embodiment of the present application is shown;

[0018] Figure 2 A structure schematic diagram of a second display substrate provided by the first embodiment of the present application is shown;

[0019] Figure 3 A structure schematic diagram of a third display substrate provided by the first embodiment of the present application is shown;

[0020] Figure 4 A structure schematic diagram of a first display substrate provided by the second embodiment of the present application is shown;

[0021] Figure 5 A structure schematic diagram of a second display substrate provided by the second embodiment of the present application is shown;

[0022] Figure 6 A structure schematic diagram of a display device provided by the third embodiment of the present application is shown.

[0023] Reference Signs:

[0024] 100, display device;

[0025] 10, display substrate;

[0026] 1, substrate substrate; 11, groove; 111, open end; 112, bottom;

[0027] 12, refrigeration structure; 121, shell; 122, refrigerant;

[0028] 2, driving array layer;

[0029] 3, non-pixel area;

[0030] 4, planar layer;

[0031] 5, light shielding unit; 6, anode layer; 7, cathode layer; 8, light emitting layer; 9, pixel defining layer;

[0032] 20, color film substrate. DETAILED DESCRIPTION

[0033] Features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one of ordinary skill in the art that the present application can be practiced without some of these specific details. The description of the embodiments is merely intended to provide a more detailed understanding of the present application. In the drawings and the following description, well-known structures and techniques have not been shown in order to avoid obscuring the present application; and, for the sake of clarity, the dimensions of the regions depicted in the figures can be exaggerated.

[0034] In operation, the backlight and the driving circuit of the liquid crystal display panel generate a large amount of heat. Long-term operation at a high temperature can damage the internal circuit elements and the polarizing plate of the display panel, thereby affecting the liquid crystal display picture.

[0035] In view of this, the embodiments of the present application provide a display substrate and a display device. A groove is arranged in a corresponding region of a substrate, and a refrigeration structure is arranged in the groove to absorb heat, so that the temperature of the display substrate is dynamically adjusted to prevent high temperature from affecting the display effect.

[0036] The specific structures of the display substrate and the display device provided by the embodiments of the present application will be described below with reference to the accompanying drawings.

[0037] First embodiment

[0038] The first embodiment of the present application provides a display substrate 10, which includes a substrate 1 and a driving array layer 2 located on the substrate 1. The display substrate 10 includes a plurality of pixel regions and a non-pixel region 3 located between adjacent pixel regions. The substrate 1 is provided with a plurality of grooves 11 corresponding to the non-pixel region 3. A refrigeration structure 12 is arranged in each of the grooves 11 to absorb heat generated by the driving array layer 2.

[0039] Specifically, the groove 11 is arranged at a position corresponding to the non-pixel region 3 to prevent refraction of light passing through the refrigeration structure 12. In addition, the refrigeration structure 12 can change color after absorbing heat. Arranging the groove 11 at a position corresponding to the non-pixel region 3 can avoid affecting the display effect of the display substrate 10.

[0040] In the present embodiment, the groove 11 is arranged in the substrate 1 corresponding to the non-pixel region 3, and the refrigeration structure 12 is arranged in the groove 11 to absorb heat, so that the temperature of the panel is dynamically adjusted to prevent high temperature from affecting the display effect.

[0041] In some embodiments, the refrigeration structure 12 comprises a shell 121 and a refrigerant 122 arranged in the shell 121, the refrigerant 122 changes its physical state after absorbing the heat generated by the driving array layer 2.

[0042] In some embodiments, when the temperature of the driving array layer 2 is higher than the preset temperature, the refrigerant 122 is in a gaseous state; when the temperature of the substrate 1 is lower than the preset temperature, the refrigerant 122 is in a liquid state.

[0043] The preset temperature is the boiling point temperature of the refrigerant 122. When the temperature of the driving array layer 2 reaches the boiling point temperature of the refrigerant 122, the refrigerant 122 absorbs heat and undergoes a vaporization reaction, showing a gaseous state; when the temperature of the driving array layer 2 does not reach the boiling point temperature of the refrigerant 122, the refrigerant 122 does not undergo a vaporization reaction, showing a liquid state.

[0044] In some embodiments, the refrigerant 122 comprises one or more substances with a boiling point of 50-70°C. The refrigerant 122 can be one or more substances with a boiling point range of 50-70°C, such as hydrocarbons, which are mostly non-toxic and have low corrosivity. Among them, the boiling point of the mixture formed by mixing a plurality of substances with a boiling point range of 50-70°C is still within the range of 50-70°C, and n-hexane with a boiling point of 70°C can be used as the refrigerant 122 or one of the substances in the refrigerant 122. Therefore, the boiling point of the refrigerant 122 can be controlled by controlling the percentage content of different substances in the mixture, thereby adjusting the temperature of the display substrate 10.

[0045] In some embodiments, the mass of the refrigerant 122 in the shell 121 is reasonably set according to the liquid-gas volume ratio of the refrigerant 122 to avoid the refrigerant 122 from expanding in volume after vaporization, causing the internal pressure of the shell to be too high and the shell to be broken. Among them, the material of the shell is high-strength glass, which can meet the anti-corrosion requirements and can efficiently transfer heat.

[0046] In some embodiments, the recess 11 is located on the side of the substrate 1 facing the driving array layer 2, or the recess 11 is located on the side of the substrate 1 away from the driving array layer 2, in addition to the recess 11 being located on the side of the substrate 1 facing the driving array layer 2 and the side of the substrate 1 away from the driving array layer 2, i.e. the recess 11 is arranged on both sides of the driving array layer 2. Figure 1 A structure diagram of a first display substrate provided by the first embodiment of the present application is shown.

[0047] As Figure 1As shown, the recess 11 is located on the side of the substrate substrate 1 facing the driving array layer 2. In this embodiment, the display substrate 10 further comprises a color filter substrate 20 and a liquid crystal layer. The color filter substrate 20 is located on the light-emitting side of the substrate substrate 1, and the liquid crystal layer is sandwiched between the substrate substrate 1 and the color filter substrate 20. The color filter substrate 20 comprises a plurality of color resistance units and a light shielding unit 5 for separating adjacent color resistance units. The light shielding unit 5 covers the recess 11 in the orthographic projection of the substrate substrate.

[0048] Specifically, the recess 11 is arranged at the position corresponding to the light shielding unit 5 to prevent refraction of light passing through the refrigeration structure 12. In addition, the refrigeration structure 12 may change color after absorbing heat, and the recess 11 arranged at the position corresponding to the light shielding unit 5 can avoid affecting the display effect.

[0049] Specifically, Figure 1 The recess 11 is located on the side of the substrate substrate 1 facing the driving array layer 2. The display substrate 10 further comprises a planar layer 4, which is located between the driving array layer 2 and the substrate substrate 1 and covers the substrate substrate 1.

[0050] As Figure 1 shown, the planar layer 4 is arranged above the substrate substrate 1, and the driving array layer 2 is arranged above the planar layer 4. By arranging the planar layer 4 covering the substrate substrate 1, the driving array layer 2 is prevented from directly contacting the uneven substrate substrate 1, thereby avoiding affecting the alignment of liquid crystal molecules.

[0051] In other embodiments, the recess 11 comprises an open end 111. When the recess 11 is located on the side of the substrate substrate 1 facing the driving array layer 2, the planar layer 4 fills the open end 111 of the recess 11, so that the upper surface of the planar layer 4 is flush with the upper surface of the substrate substrate 1.

[0052] As Figure 2 shown, the planar layer 4 is arranged at the open end of the recess 11, and the upper surface of the planar layer 4 is flush with the upper surface of the substrate substrate 1. The driving array layer 2 is arranged above the planar layer 4, avoiding the driving array layer 2 directly contacting the uneven substrate substrate 1, thereby avoiding affecting the alignment of liquid crystal molecules.

[0053] Compared with Figure 1 the embodiment shown, Figure 2 in the embodiment shown, the planar layer 4 only fills the recess 11, saving the raw materials required for the planar layer 4 and reducing costs.

[0054] In addition, the recess 11 can also be located on the side of the substrate substrate 1 away from the driving array layer 2. As Figure 3 shown, the recess 11 is located at the bottom of the substrate substrate 1. In this embodiment, the side of the substrate substrate 1 facing the driving array layer 2 is flat, so that the driving array layer 2 can be directly arranged on the substrate substrate 1 without the need to arrange a planar layer 4.

[0055] It is worth mentioning that the flat layer 4 is made of high thermal conductive material to ensure that the heat generated during the operation of the driving array layer 2 can be transferred to the refrigerant 122 of the refrigeration structure 12 through the flat layer 4.

[0056] In summary, for the liquid crystal display device, when the groove 11 is arranged on the side of the substrate 1 facing the driving array layer 2, the smoothness of the side of the substrate 1 facing the liquid crystal layer is poor, so the flat layer 4 can be arranged to avoid affecting the alignment of the liquid crystal molecules; when the groove 11 is arranged on the side of the substrate 1 away from the driving array layer 2, the smoothness of the side of the substrate 1 facing the liquid crystal layer is not affected by the groove 11, so the flat layer 4 is not needed.

[0057] In some embodiments, the groove 11 further comprises a bottom 112, and the area of the orthogonal projection of the refrigeration structure 12 to the bottom 112 is greater than the area of the orthogonal projection of the open end 111 to the bottom 112 and less than the area of the bottom 112.

[0058] Specifically, the orthogonal projection of the refrigeration structure 12 to the bottom 112 of the groove 11 is less than the area of the bottom 112, so that the refrigeration structure 12 can be arranged in the groove 11; the orthogonal projection of the refrigeration structure 12 to the bottom 112 of the groove 11 is greater than the orthogonal projection of the open end 111 to the bottom 112 of the groove 11, so that the refrigeration structure 12 will not slide out of the groove 11 when the substrate 1 is tilted.

[0059] In some embodiments, an optical adhesive (not shown in the figure) is arranged in the groove 11 to fix the refrigeration structure 12 in the groove 11.

[0060] Specifically, the optical adhesive is arranged at the bottom 112 of the groove 11 to more stably fix the refrigeration structure 12 in the groove 11.

[0061] In the present embodiment, the groove 11 is arranged on the side of the display substrate 10 facing the driving array layer 2, and the refrigeration structure 12 is arranged in the groove 11. The refrigeration structure 12 absorbs heat to generate vaporization reaction to reduce the temperature of the display substrate 10, so as to realize dynamic adjustment of the panel temperature to prevent high temperature from affecting the display effect. The present embodiment lists the liquid crystal display device, and the groove 11 is arranged at the position corresponding to the light shielding unit 5 to prevent refraction of light passing through the refrigeration structure 12 and to avoid affecting the display effect. When the groove 11 is arranged on the side facing the driving array layer 2, the flat layer 4 is arranged to avoid affecting the alignment of the liquid crystal molecules, so as to ensure the display effect of the liquid crystal display device.

[0062] Second embodiment

[0063] The second embodiment of the present application provides a display substrate 10, which is similar to the first embodiment in structure, except that the display substrate 10 further comprises a plurality of light-emitting regions and a pixel defining layer 9 arranged on the substrate 1, the light-emitting region comprises an anode layer 6, a cathode layer 7 and a light-emitting layer 8 arranged on the substrate 1, and the pixel defining layer 9 covers the recess 11 in orthographic projection on the substrate 1.

[0064] Specifically, the recess 11 is arranged at the position corresponding to the pixel defining layer 9 to prevent the light from being refracted when passing through the cooling structure 12. Since the pixel defining layer 9 does not emit light, the cooling structure 12 may change color after absorbing heat, and the recess 11 arranged at the position corresponding to the pixel defining layer 9 can avoid affecting the display effect.

[0065] Figure 4 FIG. 1 shows a structural schematic diagram of a first display substrate provided by the second embodiment of the present application; Figure 5 FIG. 2 shows a structural schematic diagram of a second display substrate provided by the first embodiment of the present application. As shown in FIG. 2, the recess 11 is located on the side of the substrate 1 facing the driving array layer 2, Figure 4 Figure 5 In some embodiments, the recess 11 is located on the side of the substrate 1 away from the driving array layer 2. The recess 11 is located on the side of the substrate 1 facing or away from the driving array layer 2, which can both reduce the temperature of the display substrate 10 and avoid damaging the internal devices.

[0066] In some embodiments, the recess 11 further comprises a bottom 112, and the area of the orthographic projection of the cooling structure 12 on the bottom 112 is greater than the area of the orthographic projection of the open end 111 on the bottom 112 and less than the area of the bottom 112.

[0067] Specifically, the orthographic projection of the cooling structure 12 on the bottom 112 of the recess 11 is less than the area of the bottom 112, so that the cooling structure 12 can be arranged in the recess 11; the orthographic projection of the cooling structure 12 on the bottom 112 of the recess 11 is greater than the orthographic projection of the open end 111 on the bottom 112 of the recess 11, which ensures that the cooling structure 12 will not slide out of the recess 11 when the substrate 1 is inclined.

[0068] In some embodiments, an optical adhesive (not shown in the figure) is arranged in the recess 11 to fix the cooling structure 12 in the recess 11.

[0069] Specifically, the optical adhesive is arranged at the bottom 112 of the recess 11 to more stably fix the cooling structure 12 in the recess 11.

[0070] ​In the embodiment, by setting the groove 11 on the side of the display substrate 10 facing the driving array layer 2, setting the refrigeration structure 12 in the groove 11, and absorbing heat to generate a vaporization reaction to reduce the temperature of the display substrate 10, the refrigeration structure 12 realizes dynamic adjustment of the panel temperature to prevent high temperature from affecting the display effect. Specifically, in the embodiment, the groove 11 is located in the position corresponding to the pixel definition layer 9 in the organic light-emitting device to prevent refraction when light passes through the refrigeration structure 12 and to avoid affecting the display effect.

[0071] Third Embodiment

[0072] Figure 6 A structure schematic diagram of the display device 100 provided by the third embodiment of the present application is shown.

[0073] As Figure 6 shown, the first embodiment or the second embodiment of the present application provides a display device 100, which includes the display substrate 10 as mentioned in the first embodiment.

[0074] It should be readily understood that "on", "over", and "above" in the present application should be interpreted in the broadest manner, such that "on" means not only "directly on", but also includes the meaning of "on" with intermediate features or layers therebetween, and "over" or "above" includes not only the meaning of "over" or "above", but also the meaning of "over" or "above" without intermediate features or layers therebetween (i.e., directly on).

[0075] The term "layer" as used herein can refer to a portion of material that includes a region having a thickness. A layer can extend over an entire underlying or overlying structure, or can have a scope less than the scope of the underlying or overlying structure. Further, a layer can be a region of a continuous structure that is homogeneous or non-homogeneous in composition, having a thickness that is less than the thickness of the continuous structure. For example, a layer can be between or at any pair of lateral planes between a top surface and a bottom surface of a continuous structure. A layer can extend laterally, vertically, and / or along a tapered surface. A substrate can be a layer, can include one or more layers therein, and / or can have one or more layers thereon, thereabove, and / or therebelow. A layer can include multiple layers. For example, an interconnect layer can include one or more conductor and contact layers (within which contacts, interconnect lines, and / or vias are formed) and one or more dielectric layers.

[0076] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display substrate, comprising a substrate and a driving array layer on the substrate, the display substrate comprising a plurality of pixel regions and a non-pixel region between adjacent pixel regions, characterized in that, the substrate is provided with a plurality of grooves corresponding to the non-pixel region, and each of the plurality of grooves is provided with a refrigeration structure for absorbing heat generated by the driving array layer; the refrigeration structure comprises a shell and a refrigerant in the shell, and the refrigerant changes its state after absorbing the heat generated by the driving array layer; wherein the refrigerant is in a gaseous state when the temperature of the driving array layer is higher than a preset temperature, and the refrigerant is in a liquid state when the temperature of the substrate is lower than the preset temperature; further comprising a color filter substrate and a liquid crystal layer, the color filter substrate is disposed on the light-emitting side of the substrate, and the liquid crystal layer is disposed between the substrate and the color filter substrate, the color filter substrate comprises a plurality of color resistance units and a light shielding unit for separating adjacent color resistance units, and the light shielding unit covers the grooves in the orthographic projection of the substrate.

2. The display substrate of claim 1, wherein, the grooves are located on the side of the substrate facing the driving array layer, and / or the grooves are located on the side away from the driving array layer.

3. The display substrate of claim 1, wherein, further comprising a planar layer, when the grooves are located on the side of the substrate facing the driving array layer, the planar layer is located between the driving array layer and the substrate and covers the substrate.

4. The display substrate of claim 1, wherein, the grooves comprise an open end, and the display substrate further comprises a planar layer, when the grooves are located on the side of the substrate facing the driving array layer, the planar layer fills the open end of the grooves, so that the upper surface of the planar layer is flush with the upper surface of the substrate.

5. The display substrate of claim 4, wherein, the grooves further comprise a bottom, and the area of the orthographic projection of the refrigeration structure to the bottom is greater than the area of the orthographic projection of the open end to the bottom and less than the area of the bottom. 6.The display substrate of claim 1, wherein, further comprising an optical adhesive disposed in the grooves for fixing the refrigeration structure in the grooves.

7. A display device, characterized by comprising: comprising: the display substrate of any one of claims 1-6.

Images