CN113514986B - Display panel and manufacturing method thereof - Google Patents
Display panel and manufacturing method thereof Download PDFInfo
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- CN113514986B CN113514986B CN202110739675.8A CN202110739675A CN113514986B CN 113514986 B CN113514986 B CN 113514986B CN 202110739675 A CN202110739675 A CN 202110739675A CN 113514986 B CN113514986 B CN 113514986B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13398—Spacer materials; Spacer properties
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Abstract
The application discloses display panel and manufacturing method thereof, the display panel includes: a first substrate, a second substrate and a liquid crystal layer; the second substrate and the first substrate are arranged in a box-to-box manner; the liquid crystal layer is arranged between the first substrate and the second substrate; the display panel further includes a spacer disposed between the first substrate and the second substrate for supporting the first substrate and the second substrate; the spacer is made of a main body material and a phase change energy storage material; the phase change energy storage material absorbs heat when the temperature is higher than a first preset temperature, and releases heat when the temperature is lower than a second preset temperature. Through the scheme, the liquid crystal is not influenced by the ambient temperature.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel and a manufacturing method thereof.
Background
At present, display technologies are continuously developed, display panels of various sizes are widely used in life of people, and liquid crystal display panels are currently mainstream display panels, which are low in cost, excellent in display effect and popular with consumers due to low radiation. But the volume of the liquid crystal is changed by the change of the ambient temperature. When the liquid crystal volume is increased by high temperature, the liquid crystal cell is liable to generate gravity Mura, and when the liquid crystal volume is shrunk by low temperature, the liquid crystal cell is liable to generate vacuum bubbles (bubbles).
Generally, a main spacer and an auxiliary spacer are arranged to make a certain liquid crystal redundancy exist in the liquid crystal cell, but the problem that the volume of the liquid crystal changes when the temperature changes still cannot be solved, so how to ensure that the liquid crystal is not affected by the ambient temperature is a technical problem which needs to be solved in the field.
Disclosure of Invention
The present application provides a display panel and a method for manufacturing the same, so as to ensure that liquid crystal is not affected by ambient temperature.
The application discloses display panel includes: a first substrate, a second substrate and a liquid crystal layer; the second substrate and the first substrate are arranged in a box pair; the liquid crystal layer is arranged between the first substrate and the second substrate; the display panel further includes a spacer disposed between the first substrate and the second substrate for supporting the first substrate and the second substrate; the spacer is made of a main body material and a phase change energy storage material; the phase change energy storage material absorbs heat when the temperature is higher than a first preset temperature and releases heat when the temperature is lower than a second preset temperature.
Optionally, a cavity is formed inside the spacer, and the phase change energy storage material is disposed in the cavity; wherein the phase change energy storage material comprises a solid-solid phase change energy storage material or a solid-liquid phase change energy storage material.
Optionally, the solid-solid phase change energy storage material includes: one or more of graphene, inorganic salts, polyols and crosslinked high density polyethylene; the solid-liquid phase change energy storage material comprises: one or more of paraffin, polyethylene glycol, polyvinyl alcohol and polyurethane.
Optionally, the first substrate further includes a pixel active switch, where the pixel active switch is used to control charging of a pixel of the display panel; the spacers are arranged corresponding to the pixel active switches.
Optionally, the first substrate further includes a passivation layer, the passivation layer covers the pixel active switch, a first groove is disposed on a side of the passivation layer away from the pixel active switch, the first groove is used for placing the phase change energy storage material, and the spacer covers the first groove and seals the phase change energy storage material.
Optionally, the spacer further includes a second groove, the second groove is disposed on one side of the spacer close to the first substrate, the first substrate is an array substrate, and the phase change energy storage material is disposed in the second groove; the spacer seals the second recess against the array substrate.
Optionally, the spacer is formed by physically mixing the host material and the phase-change energy storage material; wherein the phase change energy storage material comprises a solid-solid phase change energy storage material.
The application also discloses a manufacturing method of the display panel, which comprises the following steps:
forming a first substrate and a second substrate;
providing a body material and a phase change energy storage material of a spacer;
forming a spacer between the first and second substrates;
and forming a display panel by oppositely arranging the first substrate and the second substrate.
Optionally, the step of forming a spacer between the first substrate and the second substrate includes:
physically mixing the host material and the phase change energy storage material;
forming a spacer on the first substrate or the second substrate through a photolithography process;
wherein the phase change energy storage material comprises a solid-solid phase change energy storage material, the solid-solid phase change energy storage material comprising: one or more of graphene, inorganic salts, polyols, and crosslinked high density polyethylene.
Optionally, the step of forming a spacer between the first substrate and the second substrate includes:
etching to form a groove on the first substrate or the second substrate;
forming a phase change energy storage material in the groove;
forming spacers on the recess using the body material.
The spacer of the present application is a composite spacer made using a host material and a phase change energy storage material. The phase-change energy storage material can generate heat by self-heating under the condition of lower external environment temperature, improve the temperature of the spacer, and absorb the heat through phase change under the condition of higher external temperature to reduce the temperature of the spacer. And the spacer plays a supporting role between the first substrate and the second substrate and is in direct contact with the liquid crystal between the first substrate and the second substrate, so that the temperature change of the spacer can directly influence the temperature of the liquid crystal. When the liquid crystal temperature rises, the phase change energy storage material in the spacer can absorb heat, when the liquid crystal temperature falls, the phase change energy storage material in the spacer can release heat, and the liquid crystal can be protected by the spacer to have stable temperature, so that the liquid crystal can be prevented from being influenced by the ambient temperature.
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 cross-sectional view of a display panel of a first embodiment of the present application;
fig. 2 is a schematic top view of a display panel according to a first embodiment of the present application;
FIG. 3 is a schematic step diagram of a method for fabricating a display panel according to a first embodiment of the present application;
FIG. 4 is a schematic view of a spacer of a second embodiment of the present application;
fig. 5 is a schematic view of a display panel of a second embodiment of the present application;
FIG. 6 is a schematic view of another spacer of the second embodiment of the present application;
fig. 7 is a schematic view of a display panel of a third embodiment of the present application;
FIG. 8 is a schematic view of a spacer of a third embodiment of the present application;
figure 9 is a schematic view of another spacer of the third embodiment of the present application.
100, a display panel; 110. a first substrate; 111. a pixel active switch; 112. a passivation layer; 113. a first groove; 120. a second substrate; 130. a spacer; 131. a host material; 132. a phase change energy storage material; 133. a second groove; 134. a cavity; 135. a primary spacer; 136. a secondary spacer; 140. and a liquid crystal layer.
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 stated otherwise, 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 any variations thereof, are intended to cover a non-exclusive inclusion, which may have the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or combinations thereof.
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 a first embodiment of the present application, fig. 1 shows a cross-sectional view of a display panel, and fig. 2 shows a top view of the display panel, the display panel 100 includes: a first substrate 110, a second substrate 120, and a liquid crystal layer 140; the second substrate 120 is disposed opposite to the first substrate 110; the liquid crystal layer 140 is disposed between the first substrate 110 and the second substrate 120; the display panel 100 further includes a Spacer 130 (PS), the Spacer 130 being disposed between the first substrate 110 and the second substrate 120, for supporting the first substrate 110 and the second substrate 120; the spacer 130 comprises a body material and a phase change energy storage material; the phase change energy storage material absorbs heat when the temperature is higher than a first preset temperature and releases heat when the temperature is lower than a second preset temperature.
The spacer 130 of the present application is a composite spacer 130, and the spacer 130 is made of a host material and a phase change energy storage material, and the host material is an ultraviolet curing resin. The phase change energy storage material can generate heat by self-heating under the condition of low external environment temperature, so that the temperature of the spacer 130 is increased, and meanwhile, the phase change energy storage material can absorb heat through phase change under the condition of high external temperature, so that the temperature of the spacer 130 is reduced. Moreover, the spacer 130 supports the first substrate 110 and the second substrate 120, and is in direct contact with the liquid crystal between the first substrate 110 and the second substrate 120, so that the temperature change of the spacer 130 can directly affect the temperature of the liquid crystal. When the liquid crystal temperature is increased due to the ambient temperature, the phase change energy storage material in the spacer 130 can absorb heat, and when the liquid crystal temperature is decreased due to the ambient temperature, the phase change energy storage material in the spacer 130 can release heat, so that the liquid crystal can be protected by the spacer 130 to have stable temperature, and the liquid crystal can be prevented from being influenced by the ambient temperature.
For example, the spacer 130 in fig. 1 is a schematic view, the spacer 130 is formed by physically mixing the host material and the phase-change energy storage material to form the spacer 130; wherein the phase change energy storage material comprises a solid-solid phase change energy storage material.
The physical mixing does not change the original characteristics of the phase change energy storage material and the main body material, and the physical mixing is mainly suitable for the solid-solid phase change energy storage material, the solid-solid phase change energy storage material refers to the material forms before and after the phase change process are solid, and the solid-solid phase change energy storage material comprises: one or more of graphene, inorganic salts, polyols and crosslinked high density polyethylene; for example: crosslinked high density polyethylene undergoes a rearrangement of the main or branch chains of the polymer accompanied by endothermic and exothermic processes. For example: the graphene material is also accompanied by the change of an internal two-dimensional plane molecular structure or a three-dimensional structure and the change of carbon chain included angles in molecules. The above can be referred to as micro molecular internal structure change, but the macro morphology is not influenced. The phase change material can be classified into a solid-solid phase change energy storage material, the listed materials all belong to low-temperature phase change energy storage materials, and the phase change temperature is between 20 and 100 ℃, namely the first preset temperature is 100 ℃, and the second preset temperature is 20 ℃. The actual using environment is different, and in some cases with a high temperature, the first preset temperature is set to 100 degrees or 80 degrees, and the first preset temperature and the second preset temperature can be selected from the phase change temperature range of 20 degrees to 100 degrees, and the actual phase change temperature can be adjusted by adjusting the mixture ratio of the multiple phase change energy storage materials, which is not described in detail herein.
It should be noted that the first substrate 110 is an array substrate, and the second substrate 120 is a color filter substrate, but the first substrate 110 may also be a COA (color on array) type array substrate. However, if the spacer 130 in the present application is not particularly described, the spacer 130 may be disposed on the first substrate 110 or the second substrate 120.
As shown in fig. 3, which is a schematic step diagram of a manufacturing method of a display panel corresponding to this embodiment, a manufacturing method of a display panel is disclosed, which includes the steps of:
s10: forming a first substrate and a second substrate;
s20: providing a main body material and a phase change energy storage material of the spacer;
s30: forming a spacer between the first and second substrates;
s40: and forming a display panel by oppositely arranging the first substrate and the second substrate.
The step of forming the spacer between the first substrate and the second substrate in the step of S30 includes:
s301: physically mixing the host material and the phase change energy storage material;
s302: forming a spacer on the first substrate or the second substrate through a photolithography process;
wherein the phase change energy storage material comprises a solid-solid phase change energy storage material, the solid-solid phase change energy storage material comprising: one or more of graphene, inorganic salts, polyols, and crosslinked high density polyethylene.
The specific process for fabricating the spacers 130 includes: before the spacer 130 is formed, the liquid slurry is unpolymerized, the powdery solid-solid phase change energy storage material is added into the prepolymerized liquid, and the composite spacer 130 is obtained after solidification and forming. After the composite spacer 130 is tiled on the first substrate 110 or the second substrate 120, exposure and development are performed, the spacer 130 is etched in a region where the spacer 130 is not needed by selecting corresponding etching liquid, and for the etching of the phase change energy storage material, a corresponding chemical material can be selected to remove the phase change energy storage material. And will not be described in detail herein. The manufacturing process is simple, only has certain requirements on the mixing process, and is relatively simple, low in cost and strong in applicability.
As a second embodiment of the present application, fig. 4 shows a schematic diagram of a spacer 130 of a display panel 100, a cavity 134 is formed inside the spacer 130, and the phase change energy storage material 132 is disposed in the cavity 134; wherein the phase change energy storage material 132 comprises a solid-solid phase change energy storage material 132a or a solid-liquid phase change energy storage material 132b.
The solid-solid phase change energy storage material 132a includes: one or more of graphene, inorganic salts, polyols and cross-linked high density polyethylene; the solid-liquid phase change energy storage material 132 comprises: one or more of paraffin, polyethylene glycol, polyvinyl alcohol and polyurethane.
The solid-liquid phase change energy storage material 132b may be interpreted as a solid and a liquid before and after phase change, respectively, and may undergo a morphological change during the phase change, such as water, which may freeze to ice at less than 0 degrees and melt to water, such as paraffin, at greater than 0 degrees, and there may be a fixation and a change in the liquid. The phase change is a reversible process and is carried out along with the change of the external temperature, and the material can act only when the external temperature is changed, so the durability of the material does not influence the normal service life of the display screen; regarding the solid-liquid phase change energy storage material 132, a wrapping structure that the spacer 130 is provided with the cavity 134 is adopted to seal and protect the phase change energy storage material 132, and the leakage problem can be prevented. Although there is a change in volume for the solid-liquid phase change energy storage material 132, the volume of the overall structure of the spacer 130 is not affected because the encapsulated structure is formed. The spacer 130 itself has high elasticity, and the volume change of the spacer 130 is also accompanied and utilized during the use, so that the spacer 130 has no influence on the use of the original spacer 130. Of course, for the wrapped structure, the cavity 134 of the spacer 130 may also be used to place the solid-solid phase change energy storage material 132, but there is a difference in manufacturing process.
Taking the manufacturing method of the solid-solid phase change energy storage material 132 to the cavity 134 of the spacer 130 as an example, a layer of the phase change energy storage material 132 may be formed on the first substrate 110 or the second substrate 120, the phase change energy storage material 132 is left in the region corresponding to the spacer 130 by etching, the phase change energy storage material 132 in the other region is etched and removed, and then the composite spacer 130 is formed by forming a layer of the body material 131 of the spacer 130, and removing the body material 131 in the other region by exposure and development.
The method for manufacturing the composite spacer 130 by using the solid-liquid phase change energy storage material 132 comprises the following steps: firstly, a spacer 130 body material 131 layer is formed on the first substrate 110 or the second substrate 120, a spacer 130 with a groove is formed through exposure and development, a solid-liquid phase change energy storage material 132 is placed in the groove of the spacer 130, the body material 131 of the other region is removed in the body material 131 layer forming the spacer 130, and a wrapping type spacer 130 structure with a cavity 134 provided with the solid-liquid phase change energy storage material 132 is formed.
The above process differences exist, but the solid-liquid phase change energy storage material 132 and the solid-solid phase change energy storage material 132 are suitable for different use environments.
As shown in fig. 5, a display panel 100 is shown, the display panel 100 includes a first substrate 110, the first substrate 110 further includes a pixel active switch 111, and the pixel active switch 111 is used to control charging of pixels of the display panel 100; the spacers 130 are disposed corresponding to the pixel active switches 111. The first substrate 110 is an array substrate. The pixel active switch 111 is also greatly affected by temperature, for example, the carrier mobility at low temperature or high temperature is different, which causes display abnormality, so that the spacer 130 is located right above the pixel active switch 111, and absorbs heat generated by the pixel active switch 111 or releases heat to the pixel active switch 111.
Specifically, the spacers 130 may be a main spacer 135 and an auxiliary spacer 136, the auxiliary spacer 136 may only contact the first substrate 110 or the second substrate 120 in a normal condition, and the auxiliary spacer 136 may only play a role in supporting when the first substrate 110 or the second substrate 120 is deformed by pressure, accordingly, the improvement of the present application may also be improved only for the auxiliary spacer 136, because in a normal condition, the auxiliary spacer 136 rarely needs to play a role in supporting, and therefore, the auxiliary spacer 136 does not have pressure, so that the phase change energy storage material 132 in the hybrid type spacer 130 of the first embodiment and the cavity type spacer 130 of the second embodiment, for example, may be subjected to pressure to break into the display panel 100, which affects the quality of the display panel 100.
Of course, the main spacer 135 is disposed corresponding to the pixel active switch 111, and the height of the pixel active switch 111 is utilized to form a step between the main spacer 135 and the auxiliary spacer 136, so that the main spacer 135 and the auxiliary spacer 136 can be formed by the same process, and a single process is used, thereby saving the cost, and for both the main spacer 135 and the auxiliary spacer 136, the composite spacer 130 of the phase change energy storage material 132 and the host material 131 can be used. Preferably, the main spacer 135 is disposed corresponding to the gate of the active switch of the pixel, because the area of the gate is large, and the heat generation is more serious, the main spacer is used to dissipate the heat of the gate.
Specifically, the array substrate is divided into a display area and a non-display area, a Gate On Array (GOA) circuit is disposed in the non-display area, a plurality of spacers 130 may be disposed corresponding to the GOA circuit, and since the GOA circuit area is more susceptible to an extremely short temperature, for the spacers 130 in the GOA circuit area, the volume of the cavity 134 of the spacer 130 as disclosed in the second embodiment occupies a larger proportion, for example, up to 80%, and as shown in fig. 6, the two spacers 130 with different proportions make the phase change energy storage material 132 in the spacer 130 more. When the spacer 130 of the first embodiment is used, it may be considered to increase the proportion of the phase change energy storage material 132 in the sum of the phase change energy storage material 132 and the host material 131, that is, the proportion of the phase change energy storage material 132 of the spacer 130 may be increased, so that the temperature of the GOA circuit region is more stable.
It should be noted that the arrangement of the spacer 130 in the present embodiment corresponding to the pixel active switch 111 is not limited to the spacer 130 in the third embodiment, and the spacers 130 in the first, third, and fourth embodiments may also be arranged corresponding to the pixel active switch 111.
As a third embodiment of the present application, fig. 7 shows a display panel 100, where the display panel 100 includes: a first substrate 110, a second substrate 120, and a liquid crystal layer; the second substrate 120 is disposed opposite to the first substrate 110; the liquid crystal layer is disposed between the first substrate 110 and the second substrate 120; the display panel 100 further includes a spacer disposed between the first substrate 110 and the second substrate 120 for supporting the first substrate 110 and the second substrate 120;
the first substrate 110 further includes a pixel active switch 111 and a passivation layer 112, wherein the pixel active switch 111 is used for controlling charging of pixels of the display panel 100; the spacers are disposed corresponding to the pixel active switches 111; the passivation layer 112 is disposed to cover the pixel active switch 111, as shown in fig. 8, which is a schematic diagram of a spacer 130, a first groove 113 is disposed on a side of the passivation layer 112 facing away from the pixel active switch 111, the first groove 113 is used for placing the phase change energy storage material, and the spacer 130 covers the first groove 113 and seals the phase change energy storage material.
In the corresponding process, the step of S30, that is, the step of forming the spacer between the first substrate and the second substrate, includes:
s311: etching to form a groove on the first substrate or the second substrate;
s312: forming a phase change energy storage material in the groove;
s313: forming spacers on the recess using the body material.
The groove is formed in the passivation layer 112 below the spacer 130, the passivation layer 112 has a certain thickness, the passivation layer 112 is etched into the first groove 113 by using an etching method, the phase change energy storage material is arranged in the first groove 113, and therefore the groove is closer to the pixel active switch 111 and also can take the temperature change of the liquid crystal into consideration. Specifically, the first groove 113 of this embodiment may also be formed by using a channel of the pixel active switch 111, the channel may be exposed after the source and drain etching is completed, and when the passivation layer 112 is formed, a portion of the passivation layer 112 on the channel is removed, as shown in fig. 7, so as to form the first groove 113. The amount of the phase change energy storage material in the first groove 113 is increased, and the response to a complex environment is enhanced.
As shown in fig. 7, as another embodiment of the present application, a spacer 130 is disclosed, where the spacer 130 further includes a second groove 133, the second groove 133 is disposed on a side of the spacer 130 close to the first substrate 110, the first substrate 110 is an array substrate, and the phase change energy storage material is disposed in the second groove 133; the spacers 130 seal the second recess 133 against the array substrate.
Unlike the second embodiment, in which the phase change energy storage material is formed inside the spacer 130, the second embodiment is a fully-enclosed cavity, and the third embodiment is also inside the spacer 130, but only a semi-enclosed groove, and other film layers are required to be matched to seal the groove. The second groove 133 of the present embodiment is generated by a manufacturing process, and it should be noted that the second groove 133 is different from the cavities of the second and third embodiments and the first groove 113 both requiring a certain etching, and the second groove 133 of the present application is different in manufacturing process in that after a solid phase change energy storage material is formed first, the etching is formed corresponding to the second groove 133, and a body material layer of the spacer 130 is formed, because the body material of the spacer 130 has a certain fluidity, a completely closed second groove 133 is formed in the solid phase change energy storage material to wrap the solid phase change energy storage material. The solid phase-change energy storage material is not limited to be a solid-solid phase-change energy storage material, but may be a solid-liquid phase-change energy storage material, and the solid-liquid phase-change energy storage material is only required to be prepared in a solid state, which is not described herein again.
It should be noted that, the limitations of each step in the present disclosure are not considered to limit the order of the steps without affecting the implementation of the specific embodiments, and the steps written in the foregoing may be executed first, or executed later, or even executed simultaneously, and as long as the present disclosure can be implemented, all the steps should be considered as belonging to the protection scope of the present application.
It should be noted that the inventive concept of the present application can form many embodiments, but the present application has a limited space and cannot be listed one by one, so that, on the premise of no conflict, any combination between the above-described embodiments or technical features can form a new embodiment, and after the embodiments or technical features are combined, the original technical effect will be enhanced.
The technical solution of the present application can be widely applied to various display panels, such as TN (Twisted Nematic) display panel, IPS (In-Plane Switching) display panel, VA (Vertical Alignment) display panel, MVA (Multi-Domain Vertical Alignment) display panel, and of course, other types of display panels, such as OLED (Organic Light-Emitting Diode) display panel, which can be applied to the above solutions.
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 can be made without departing from the concept of the present application, which should be considered as belonging to the protection scope of the present application.
Claims (7)
1. A display panel, comprising: a first substrate, a second substrate and a liquid crystal layer; the second substrate and the first substrate are arranged in a box pair; the liquid crystal layer is arranged between the first substrate and the second substrate; it is characterized in that the preparation method is characterized in that,
the display panel further includes a spacer disposed between the first substrate and the second substrate for supporting the first substrate and the second substrate;
the spacer is made of a main body material and a phase change energy storage material; the phase change energy storage material absorbs heat when the temperature is higher than a first preset temperature, and releases heat when the temperature is lower than a second preset temperature;
the first substrate further comprises a pixel active switch, and the pixel active switch is used for controlling the pixel charging of the display panel; the spacers are arranged corresponding to the pixel active switches;
the first substrate further comprises a passivation layer, the passivation layer covers the pixel active switch, a first groove is formed in one side, away from the pixel active switch, of the passivation layer, the first groove is used for containing the phase change energy storage material, and the spacer covers the first groove and seals the phase change energy storage material.
2. The display panel according to claim 1, wherein a cavity is formed inside the spacer, and the phase change energy storage material is disposed in the cavity;
wherein the phase change energy storage material comprises a solid-solid phase change energy storage material or a solid-liquid phase change energy storage material.
3. The display panel of claim 2, wherein the solid-solid phase change energy storage material comprises: one or more of graphene, inorganic salts, polyols and cross-linked high density polyethylene; the solid-liquid phase change energy storage material comprises: one or more of paraffin, polyethylene glycol, polyvinyl alcohol and polyurethane.
4. The display panel according to claim 1, wherein the spacer further comprises a second groove disposed on a side of the spacer close to the first substrate, the first substrate is an array substrate, and the phase change energy storage material is disposed in the second groove; the spacer seals the second recess against the array substrate.
5. The display panel according to claim 1, wherein the spacer is formed by physically mixing the host material and the phase change energy storage material;
wherein the phase change energy storage material comprises a solid-solid phase change energy storage material.
6. A manufacturing method of a display panel is characterized by comprising the following steps:
forming a first substrate and a second substrate;
providing a body material and a phase change energy storage material of a spacer;
forming a spacer between the first and second substrates;
forming a display panel by oppositely arranging the first substrate and the second substrate;
the step of forming a spacer between the first and second substrates includes:
etching the first substrate or the second substrate to form a groove;
forming a phase change energy storage material in the groove;
forming spacers on the recess using the body material.
7. The method according to claim 6, wherein the step of forming a spacer between the first substrate and the second substrate comprises:
physically mixing the host material and the phase change energy storage material;
forming a spacer on the first substrate or the second substrate through a photolithography process;
wherein the phase change energy storage material comprises a solid-solid phase change energy storage material comprising: one or more of graphene, inorganic salts, polyols, and crosslinked high density polyethylene.
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| CN103163690A (en) * | 2011-12-15 | 2013-06-19 | 三菱电机株式会社 | Liquid crystal display device |
| CN106773220A (en) * | 2017-02-16 | 2017-05-31 | 京东方科技集团股份有限公司 | Negative expansion microballoon and preparation method, liquid crystal display panel |
| CN109712997A (en) * | 2019-02-21 | 2019-05-03 | 京东方科技集团股份有限公司 | Array substrate and its manufacturing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103163690A (en) * | 2011-12-15 | 2013-06-19 | 三菱电机株式会社 | Liquid crystal display device |
| CN106773220A (en) * | 2017-02-16 | 2017-05-31 | 京东方科技集团股份有限公司 | Negative expansion microballoon and preparation method, liquid crystal display panel |
| CN109712997A (en) * | 2019-02-21 | 2019-05-03 | 京东方科技集团股份有限公司 | Array substrate and its manufacturing method |
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