TWI704708B - Display panel - Google Patents

Abstract

A display panel has a display area and a peripheral area which is located outside the display area. The display panel includes a first substrate, a first color filter, a second color filter, a first light-blocking layer, a second light-blocking layer, a second substrate, a light-emitting component, and a filling material. The first substrate and the second substrate are flexible. The first color filter and the second color filter are disposed on the first substrate and are within the display area. The second color filter is adjacent to the first color filter. The first light-blocking layer is disposed on the first color filter. The second light-blocking layer is disposed on the first substrate and is within the peripheral area. A height of the first light-blocking layer with respect to the first substrate is different than a height of the second light-blocking layer with respect to the first substrate. The light-emitting component is disposed on the second light-blocking layer and between the second color filter and the second substrate. The filling material is disposed between the first substrate and the second substrate.

Description

Display panel

This disclosure relates to a display panel.

Among various electronic products of household appliances, display panels have been widely used to output images or operate menus. In response to the current trend of the consumer market, these electronic products with display panels tend to have narrow bezel designs. In this regard, in the manufacturing process of the display panel, the substrate and the counter substrate are bonded through the glue layer, and then the display panel is cut to define the size of the display panel. Therefore, the bonding relationship between the substrate and the opposite substrate is maintained by the colloid layer, so that the manufacturing yield of the display panel will also be related to the coating quality of the colloid layer. Therefore, how to improve the coating quality of the colloidal layer has become one of the important issues in related fields.

An embodiment of the present invention provides a display panel having a display area and a peripheral area located outside the display area, and including a first substrate, a first color resist layer, a second color resist layer, a first light-shielding layer, and a second light-shielding layer Layer, second substrate, light-emitting element, and filling material. The first substrate is flexible. The first color resist layer is arranged on the first substrate and located in the display area. The second color resist layer is disposed on the first substrate , And located in the display area and adjacent to the first color resist layer. The first light shielding layer is disposed on the first color resist layer. The second light shielding layer is disposed on the first substrate and located in the peripheral area, and the height of the first light shielding layer relative to the first substrate is different from the height of the second light shielding layer relative to the first substrate. The second substrate is flexible. The light-emitting element is arranged on the second color resist layer and located between the second color resist layer and the second substrate. The filling material is disposed between the first substrate and the second substrate, and is located between the first substrate and the light-emitting element.

In some embodiments, the display panel further includes a colloid. The glue is arranged between the first substrate and the second substrate, and is located in the peripheral area and on a single side of the display area.

In some embodiments, the colloid contains metal particles therein.

In some embodiments, the display panel further includes a first spacer and a second spacer. The first spacer is disposed on the first light shielding layer and is located between the first substrate and the second substrate, wherein the first spacer has a first top surface, and the first top surface faces away from the first substrate. The second spacer is disposed on the second light shielding layer and is located between the first substrate and the second substrate. The second spacer has a second top surface, the second top surface faces away from the first substrate, and the first The height of the top surface and the second top surface relative to the first substrate are substantially the same.

In some embodiments, the height of the first light shielding layer relative to the first substrate is greater than the height of the second light shielding layer relative to the first substrate.

In some embodiments, there is no color resist layer between the second light shielding layer and the first substrate.

In some embodiments, the display panel further includes a third spacer. The third spacer is disposed on the first light-shielding layer, and is located between the first substrate and the Between the two substrates, the third spacer has a third top surface, the third top surface faces away from the first substrate, and the height of the first top surface relative to the first substrate is greater than the height of the third top surface relative to the first substrate.

In some embodiments, the display panel further includes a third color resist layer and a fourth color resist layer. The third color resist layer is disposed between the first substrate and the second light shielding layer. The fourth color resist layer is disposed between the third color resist layer and the second light shielding layer, and the height of the first light shielding layer relative to the first substrate is smaller than the height of the second light shielding layer relative to the first substrate.

In some embodiments, the display panel further includes a support. The support is closer to the second substrate than the first spacer and the second spacer, and the vertical projection of the support on the first substrate is separated from the vertical projection of the first spacer and the second spacer on the first substrate.

In some embodiments, the display panel further includes a first spacer and a second spacer. The first gap material is located between the first substrate and the second substrate and contacts the filling material. The first gap objects each have a first top surface, and the first top surface faces away from the first substrate. The second gap material is located between the first substrate and the second substrate and contacts the filling material. The second gap objects each have a second top surface, the second top surface faces away from the first substrate, and the first top surface and the first The heights of the two top surfaces relative to the first substrate are substantially the same. The length of the display panel in the first direction is greater than the length in the second direction. The first direction is different from the second direction, and the first spacer and the second The arrangement density of the spacers in the first direction is gradual.

In some embodiments, the light-emitting element includes an organic light-emitting layer.

With the above configuration, the height difference of the layer structure of the filter layer substrate at the junction of the display area and the peripheral area can be reduced, so as to facilitate the uniform coating of the filler Material, thereby improving the yield of the display panel.

100A, 100B, 100C, 100D, 100E‧‧‧Display panel

102‧‧‧Display area

104‧‧‧ Surrounding area

110‧‧‧Color filter substrate

112‧‧‧First substrate

114‧‧‧First color resist layer

116‧‧‧Second color resist layer

118‧‧‧First dielectric layer

118A‧‧‧Part One

118B‧‧‧Part Two

120‧‧‧First shading layer

122‧‧‧Second shading layer

124‧‧‧Second dielectric layer

126‧‧‧First circuit layer

127‧‧‧The third dielectric layer

128‧‧‧Second circuit layer

129‧‧‧The fourth dielectric layer

130‧‧‧Array substrate

132‧‧‧Second substrate

134‧‧‧Drive circuit layer

136‧‧‧Fifth dielectric layer

138‧‧‧Pixel definition layer

139A‧‧‧First opening

139B‧‧‧Second opening

140‧‧‧First electrode layer

141‧‧‧Conductive layer

142‧‧‧Light-emitting element

144‧‧‧Second electrode layer

146‧‧‧Sixth dielectric layer

150‧‧‧filling material

152‧‧‧colloid

160‧‧‧First gap

161‧‧‧First Top Surface

162‧‧‧Second Spacer

163‧‧‧Second top surface

164‧‧‧The third gap

165‧‧‧The third top surface

170‧‧‧The third color resist layer

172‧‧‧The fourth color resist layer

180‧‧‧Support

1B-1B’, 2B-2B’‧‧‧Line segment

A1‧‧‧First area

A2‧‧‧Second area

A3‧‧‧The third area

D1‧‧‧First direction

D2‧‧‧Second direction

H1, H2, H3‧‧‧Height

L‧‧‧dotted line

FIG. 1A is a schematic top view of the display panel according to the first embodiment of the present disclosure.

Figure 1B is a schematic cross-sectional view taken along the line 1B-1B' of Figure 1A.

FIG. 2A is a schematic top view of the display panel according to the second embodiment of the present disclosure.

Figure 2B is a schematic cross-sectional view taken along the line 2B-2B' of Figure 2A.

FIG. 3 is a schematic cross-sectional view of the display panel according to the third embodiment of the present disclosure.

FIG. 4 is a schematic cross-sectional view of the display panel according to the fourth embodiment of the present disclosure.

FIG. 5 is a schematic top view of the display panel according to the fifth embodiment of the present disclosure.

Hereinafter, a plurality of embodiments of the present invention will be disclosed in the form of drawings. For clear description, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit the present invention. In other words, in some embodiments of the present invention, these practical details are unnecessary. In addition, in order to simplify the drawings, some conventionally used structures and elements will be shown in a simple schematic manner in the drawings.

In this article, the terms first, second, third, etc. are used to describe various elements, components, regions, and layers, which can be understood. However, these elements, components, regions, and layers should not be limited by these terms. These words are only used to identify a single element, component, area, and layer. Therefore, in the following, a first element, component, region, or layer may also be referred to as a second element, component, region, or layer without departing from the intent of the present invention.

As used herein, "about", "approximately" or "approximately" or "substantially" includes the stated value and the average value within the acceptable deviation range of the specific value determined by a person of ordinary skill in the art, taking into account the discussion The measurement and the specific number of errors associated with the measurement (ie, the limitation of the measurement system). For example, "about" or "substantially" can mean within one or more standard deviations of the stated value, such as within ±30%, ±20%, ±10%, ±5%.

The display panel of the present disclosure includes a filter layer substrate, an array substrate, and a filling material, wherein the filling material is filled between the filter layer substrate and the array substrate to pair and fix the filter layer substrate and the array substrate. By reducing the height difference of the layer structure of the filter substrate at the junction of the display area and the peripheral area, it is advantageous to uniformly dispose the filling material, thereby improving the yield of the display panel.

Please refer to FIG. 1A and FIG. 1B. FIG. 1A is a schematic top view of the display panel 100A according to the first embodiment of the present disclosure, and FIG. 1B is a cross-section along the line 1B-1B' of FIG. 1A. Schematic.

The display panel 100A has a display area 102 and a peripheral area 104 located outside the display area 102. The peripheral area 104 has a first area A1, a second area A2, and a third area A3. The first area A1 surrounds the display area 102, and the second area A2 is located between the first area A1 and the third area A3. Each area can provide The same function, for example, the first area A1 can be used as the frame area of the display area 102, the second area A2 can be used as an area for disposing colloids, and the third area A3 can be used for disposing circuit layers or driving elements (not shown) Show) the line area.

The display panel 100A includes a color filter substrate 110, an array substrate 130, a filling material 150 and a colloid 152, wherein the filling material 150 and the colloid 152 are disposed between the color filter substrate 110 and the array substrate 130.

The color filter substrate 110 includes a first substrate 112 and a first color resist layer 114, a second color resist layer 116, a first dielectric layer 118, a first light shielding layer 120, and a second light shielding layer formed on the first substrate 112. 122, the second dielectric layer 124, the first circuit layer 126, the third dielectric layer 127, the second circuit layer 128, and the fourth dielectric layer 129.

The first substrate 112 is transparent and flexible. For example, the first substrate 112 may be a flexible transparent substrate, such as a polyimide (PI) substrate. The first color resist layer 114 and the second color resist layer 116 are disposed on the first substrate 112 and located in the display area 102, and the second color resist layer 116 is adjacent to the first color resist layer 114. The first color resist layer 114 and the second color resist layer 116 may be color resist layers of different colors. For example, the first color resist layer 114 is a blue color resist layer, and the second color resist layer 116 is a green color resist layer. The thickness of one color resist layer 114 is smaller than the thickness of the second color resist layer 116.

The first dielectric layer 118 is disposed on the first substrate 112 and covers the first color resist layer 114 and the second color resist layer 116. The material of the first dielectric layer 118 can be an organic material or an inorganic material, such as epoxy resin, silicon oxide (SiOx), silicon nitride (SiNx), a composite layer composed of silicon oxide and silicon nitride, or other materials. Suitable dielectric materials. In addition, the first dielectric layer 118 may include a first portion 118A And the second portion 118B, wherein the first portion 118A of the first dielectric layer 118 is located in the display area 102 and covers the first color resist layer 114 and the second color resist layer 116, and the second portion of the first dielectric layer 118 118B is located in the peripheral area 104 and does not cover any color resist layer. Since there is a difference between the first portion 118A and the second portion 118B of the first dielectric layer 118 whether there is a color resist layer, the height of the upper surface of the first portion 118A of the first dielectric layer 118 relative to the first substrate 112 will be greater than The height of the upper surface of the second portion 118B of the first dielectric layer 118 relative to the first substrate 112.

The first light shielding layer 120 is disposed on the first color resist layer 114 and the first dielectric layer 118. In other words, the first light-shielding layer 120 is located directly above the first color resist layer 114, and therefore the first light-shielding layer 120 is located in the display area 102, and the first light-shielding layer 120 and the first color resist layer 114 are located The vertical projections of the first substrate 112 overlap each other. The first light-shielding layer 120 can provide the purpose of shielding light, and when the vertical projections of the first light-shielding layer 120 and the first color resist layer 114 on the first substrate 112 overlap each other, the first color resist layer 114 and the first The light shielding layer 120 jointly shields light, thereby further enhancing the effect of shielding light.

The second light shielding layer 122 is disposed on the first substrate 112 and the first dielectric layer 118 and is located in the peripheral area 104. For the first light shielding layer 120 and the second light shielding layer 122, the first light shielding layer 120 is formed on the upper surface of the first portion 118A of the first dielectric layer 118, and the second light shielding layer 122 is formed on the first dielectric layer 118. The upper surface of the second portion 118B of the layer 118 makes the height of the first light shielding layer 120 relative to the first substrate 112 different from the height of the second light shielding layer 122 relative to the first substrate 112. Specifically, the height of the first light shielding layer 120 relative to the first substrate 112 is greater than the height of the second light shielding layer 122 relative to the first substrate 112. In addition, by The second portion 118B of the first dielectric layer 118 does not cover any color resist layer, so there is also no color resist layer between the second light shielding layer 122 and the first substrate 112.

The second dielectric layer 124 is disposed on the first dielectric layer 118 and covers the first light shielding layer 120 and the second light shielding layer 122. The material of the second dielectric layer 124 can be an organic material or an inorganic material, such as epoxy resin, silicon oxide (SiOx), silicon nitride (SiNx), a composite layer composed of silicon oxide and silicon nitride, or other materials. Suitable dielectric materials.

The first circuit layer 126 is disposed on the second dielectric layer 124, and the vertical projection of the first circuit layer 126 on the first substrate 112 and the vertical projection of the first light shielding layer 120 and the second light shielding layer 122 on the first substrate 112 will mutually overlapping. The material of the first circuit layer 126 can be a transparent conductive material, a metallic material or a non-metallic material, such as indium tin oxide, indium zinc oxide, zinc oxide, indium gallium zinc oxide, copper, silver, molybdenum, carbon nanotubes, the above A combination of materials or other suitable conductive materials.

The third dielectric layer 127 is disposed on the second dielectric layer 124 and covers the first circuit layer 126. The material of the third dielectric layer 127 can be an organic material or an inorganic material, such as epoxy, silicon oxide (SiOx), silicon nitride (SiNx), a composite layer composed of silicon oxide and silicon nitride, or other materials. Suitable dielectric materials. In addition, the third dielectric layer 127 can be divided into a first part and a second part, which are separated from each other and located in the display area 102 and the peripheral area 104 respectively.

The second circuit layer 128 is disposed on the third dielectric layer 127, and the vertical position of the second circuit layer 128 on the first substrate 112 and the first circuit layer 126, the first light shielding layer 120 and the second light shielding layer 122 are in the first The vertical projections of the substrate 112 overlap each other. The material of the second circuit layer 128 can be a transparent conductive material, a metallic material or a non-metallic material, such as indium tin oxide, indium zinc oxide, zinc oxide, indium gallium zinc oxide, Copper, silver, molybdenum, carbon nanotubes, a combination of the above materials, or other suitable conductive materials. In addition, the first circuit layer 126 and the second circuit layer 128 can be separated from each other up and down through the third dielectric layer 127.

The first circuit layer 126 and the second circuit layer 128 can be connected to external circuits, for example to the circuit layer in the third area A3, and can be driven by the circuit layer to electrically couple capacitors to each other, thereby serving as the display panel 100A Touch basis. Further, when the user clicks to operate the display panel 100A, the capacitance commonly coupled by the first circuit layer 126 and the second circuit layer 128 will change in response to the click action, so that the capacitance in the third area A3 The driving element can determine the user's click position on the display panel 100A according to the capacitance change.

The fourth dielectric layer 129 covers the second dielectric layer 124, the third dielectric layer 127, and the second circuit layer 128, and can be used as a protective layer for the second circuit layer 128 to prevent oxidation of the second circuit layer 128. The material of the fourth dielectric layer 129 can be organic or inorganic materials, such as epoxy resin, silicon oxide (SiOx), silicon nitride (SiNx), a composite layer composed of silicon oxide and silicon nitride, or other materials. Suitable dielectric materials.

The array substrate 130 includes a second substrate 132, a driving circuit layer 134, a fifth dielectric layer 136, a pixel definition layer 138, a first electrode layer 140, a conductive layer 141, a light emitting element 142, and a second substrate 132 formed on the second substrate 132. The second electrode layer 144 and the sixth dielectric layer 146.

The second substrate 132 may be configured to be parallel to the first substrate 112, and the second substrate 132 is transparent and flexible. For example, the second substrate 132 may be a flexible and transparent substrate, such as a polyimide substrate.

The driving circuit layer 134 is disposed between the first substrate 112 and the second substrate 132 and is connected to the second substrate 132. In some embodiments, the driving circuit layer 134 may include a thin film transistor array configured by a plurality of thin film transistors. In other embodiments, the driving circuit layer 134 may also include a driving circuit layer.

The fifth dielectric layer 136 is disposed between the first substrate 112 and the second substrate 132 and covers the driving circuit layer 134. The material of the fifth dielectric layer 136 can be an organic material or an inorganic material, such as epoxy resin, silicon oxide (SiOx), silicon nitride (SiNx), a composite layer composed of silicon oxide and silicon nitride, or other materials. Suitable dielectric materials.

The pixel definition layer 138 is disposed between the first substrate 112 and the second substrate 132 and partially covers the fifth dielectric layer 136. The pixel definition layer 138 may have a first opening 139A and a second opening 139B. The first opening 139A can be used as a pixel area of the display panel 100A and aligned with the second color resist layer 116. The second opening 139B can be adjacent to and separated from the first opening 139A. The material of the pixel definition layer 138 can be organic or inorganic materials, such as epoxy resin, silicon oxide (SiOx), silicon nitride (SiNx), a composite layer composed of silicon oxide and silicon nitride, or other suitable materials. Of dielectric materials.

The first electrode layer 140 and the conductive layer 141 are disposed between the first substrate 112 and the second substrate 132. Specifically, the first electrode layer 140 and the conductive layer 141 may be formed on the lower surface of the fifth dielectric layer 136, and the first electrode layer 140 is located in the first opening 139A of the pixel definition layer 138, and the conductive layer 141 It is located in the second opening 139B of the pixel definition layer 138. In some embodiments, the first electrode layer 140 and the conductive layer 141 may be formed by patterning the same metal layer, and after patterning, they are separated from each other to achieve electrical isolation.

The light-emitting element 142 may be formed in the first opening 139A of the pixel definition layer 138, and thus is disposed on the second color resist layer 116 and located between the second color resist layer 116 and the second substrate 132. Furthermore, since the first opening 139A of the pixel definition layer 138 is aligned with the second color resist layer 116, the light emitting element 142 is also aligned with the second color resist layer 116. The light emitting element 142 is electrically connected to the first electrode layer 140. The light emitting element 142 may include an organic light emitting layer, thereby forming an organic light emitting diode. In some embodiments, the light-emitting element 142 may further include an electron blocking layer, an electron injection layer, a hole blocking layer, and a hole injection layer (not shown). When the light emitting element 142 is driven to emit light, the emitted light will travel toward the second color resist layer 116 and pass through the second color resist layer 116. The display panel 100A can display images through the light passing through the second color resist layer 116. In this way, the light emitted from the light-emitting element 142 is filtered by the second color resist layer 116 to filter colors. The color purity of the display panel 100A can be improved.

The second electrode layer 144 is disposed between the first substrate 112 and the second substrate 132 and covers the light emitting element 142 and the pixel definition layer 138. The second electrode layer 144 can extend into the first opening 139A and be electrically connected Luminescent element 142. In addition, the second electrode layer 144 can also extend into the second opening 139B and be electrically connected to the conductive layer 141 so as to be connected to a common potential through the conductive layer 141. When the light-emitting element 142 is to be driven, a potential can be applied to the first electrode layer 140, so that the first electrode layer 140 and the second electrode layer 144 can bias the light-emitting element 142 therebetween, and thus drive the light-emitting element 142 to emit light .

The sixth dielectric layer 146 is disposed between the first substrate 112 and the second substrate 132 and covers the second electrode layer 144, the light emitting element 142, the pixel definition layer 138 and the fifth dielectric layer 136. The sixth dielectric layer 146 can be used as an encapsulation layer to Prevent the layer or components located between it and the second substrate 132 from being damaged by external influences. The sixth dielectric layer 146 can be a single-layer structure or a multilayer composite structure, and includes organic or inorganic materials, such as polyimide, silicon oxide, silicon nitride, silicon oxynitride, other suitable materials or the above materials combination.

The filling material 150 is disposed between the first substrate 112 and the second substrate 132, and is also located between the layers formed on the first substrate 112 and the second substrate 132, such as between the first substrate 112 and the second substrate 132. Between the light-emitting elements 142.

The glue 152 is disposed between the first substrate 112 and the second substrate 132 and is located in the peripheral area 104. Specifically, the glue 152 is disposed in the second area A2 of the peripheral area 104 and is therefore located on a single side of the display area 102. In some embodiments, the colloid 152 may contain metal particles therein, and the metal particles can provide electrical conduction, so that part of the elements or layers of the color filter substrate 110 can pass through the metal particles of the colloid 152 and electrically connect to the array substrate 130 Part of the components or layers.

The filling material 150 and the colloid 152 can provide a fixed purpose together. For example, after the respective layer structures or elements of the color filter substrate 110 and the array substrate 130 are formed, the filling material 150 and the colloid 152 can be filled between the first substrate 112 and the second substrate 132 to complete the pairing The color filter substrate 110 and the array substrate 130 become the display panel 100A.

On the other hand, the size of the display panel 100A may be defined by a cutting process, and the cutting process is performed after the filling material 150 and the gel 152 are filled. For example, before cutting the display panel 100A, at least the first substrate 112, the second substrate 132 and the glue 152 will extend to the area of FIG. 1A The periphery of the display area 102 of the display panel 100A (that is, the first substrate 112, the second substrate 132 and the glue 152 will extend to the upper and lower sides and the left and right sides of the display area 102). Next, after the filling material 150 and the glue 152 are cured, the upper and left and right sides of the display area 102 of the display panel 100A can be cut off to form an appearance as shown in Figure 1A, and the remaining glue 152 and circuit area It is located on a single side of the display area 102, so that the display panel 100A has a narrow frame design.

When the first substrate 112 and the second substrate 132 are flexible, the display panel 100A is therefore also flexible. In this regard, the filling uniformity of the filling material 150 has a correlation with the yield of the display panel 100A.

Furthermore, during the manufacturing process of the display panel 100A, the first substrate 112 of the color filter substrate 110 and the second substrate 132 of the array substrate 130 may each be formed on a carrier substrate, such as a glass substrate, and After the respective layer structures or elements of the color filter substrate 110 and the array substrate 130 are formed, the carrier substrate is peeled from the first substrate 112 and the second substrate 132. For example, laser lift-off (LLO) can be used. ). After the carrier substrate is peeled off, the first substrate 112 and the second substrate 132 may be bent, which may cause the layers thereon to peel off. In this regard, if air bubbles are present in the filling material 150, the chance of layer peeling will increase. Therefore, if the filling material 150 uniformly fills the space between the first substrate 112 and the second substrate 132, and makes the area between the first substrate 112 and the second substrate 132 have enough glue, the layer formation can be reduced. The peeling condition improves the yield of the display panel 100A.

For example, if the space between the fourth dielectric layer 129 and the sixth dielectric layer 146 in the peripheral region 104 is too small, the filling material 150 will fail It is uniformly filled here, so that the filling material 150 located here may generate bubbles, and thus increase the chance of layer peeling.

Through the above-mentioned layer structure configuration, when the height of the first shading layer 120 relative to the first substrate 112 is greater than the height of the second shading layer 122 relative to the first substrate 112, the fourth dielectric layer in the display area 102 can be caused The height of 129 relative to the first substrate 112 is greater than the height of the fourth dielectric layer 129 in the peripheral region 104 relative to the first substrate 112, which will enable the filling material 150 to be sufficient to evenly fill the fourth dielectric layer in the peripheral region 104 129 and the space between the sixth dielectric layer 146.

On the other hand, since only the first color resist layer 114 exists between the first light shielding layer 120 and the first substrate 112, and there is no color resist layer between the second light shielding layer 122 and the first substrate 112, the first substrate The height of the gap between the display area 102 and the peripheral area 104 of the layer on 112 is substantially equal to or less than the thickness of the first color resist layer 114. In this way, during the coating of the filling material 150, the filling material 150 can be evenly covered on the layer of the color filter substrate 110 at the junction of the display area 102 and the peripheral area 104, thereby avoiding the filling material here. 150 produces bubbles.

Under the condition that the filling material 150 can be uniformly coated and the bubbles generated by the coating of the filling material 150 can be effectively avoided, the chance of layer peeling can be reduced, and thus the yield rate of the display panel 100A can be improved.

Please refer to FIGS. 2A and 2B again. FIG. 2A is a schematic top view of the display panel 100B according to the second embodiment of the present disclosure, and FIG. 2B shows the line 2B-2B' along the line 2A of FIG. 2A. Schematic diagram of the cross-section. At least one difference between this embodiment and the first embodiment is that the display of this embodiment The panel 100B may further include a first spacer 160 and a second spacer 162, which can be used to maintain the distance between the color filter substrate 110 and the array substrate 130.

The first spacer 160 is disposed on the first light shielding layer 120 and located between the first substrate 112 and the second substrate 132. The second spacer 162 is disposed on the second light shielding layer 122 and is located between the first substrate 112 and the second substrate 132. Specifically, the first spacer 160 and the second spacer 162 may be formed on the fourth dielectric layer 129, and the first spacer 160 is located in the display area 102, and the second spacer 162 is located in the peripheral area 104 Inside.

The first spacer 160 has a first top surface 161, and the second spacer 162 has a second top surface 163, and the first top surface 161 and the second top surface 163 face away from the first substrate 112, wherein the first top surface 161 The height of the second top surface 163 relative to the first substrate 112 is substantially the same. With the first spacer 160 and the second spacer 162, the space between the color filter substrate 110 and the array substrate 130 can be sufficient for the filling material 150 to be uniformly coated, thereby improving the yield of the display panel 100B.

In some embodiments, the height H1 of the first spacer 160 may be between 1 μm and 10 μm, and the height H2 of the second spacer 162 may be between 1 μm and 10 μm. In some embodiments, the height H1 of the first spacer 160 is smaller than the height H2 of the second spacer 162. In addition, although FIG. 2B illustrates the first spacer 160 and the second spacer 162 as not contacting the array substrate 130, in some embodiments, the first spacer 160 and the second spacer 162 may also be Contact the array substrate 130.

On the other hand, the display panel 100B may further include a third spacer 164 disposed on the first light shielding layer 120 and located between the first substrate 112 and the second substrate 132. Specifically, the third spacer 164 may be 160 is formed on the fourth dielectric layer 129 and is located directly above the first light shielding layer 120 together with the first spacer 160. Both the first spacer 160 and the third spacer 164 can be located in the display area 102, and the first spacer 160 is closer to the peripheral area 104 than the third spacer 164.

The third spacer 164 can be used as a buffer spacer to provide support when the first spacer 160 collapses or is over-compressed due to insufficient supporting force. For example, the third spacer 164 has a third top surface 165, and the third top surface 165 faces away from the first substrate 112, wherein the height of the first top surface 161 relative to the first substrate 112 is greater than that of the third top surface 165. The height of the first substrate 112. In other words, when the first spacer 160 is sufficient to support the layer structure thereon, the third spacer 164 is separated from the array substrate 130 by a certain distance. In some embodiments, the height H3 of the third spacer 164 may be between 1 μm and 10 μm, and the height H3 of the third spacer 164 may be smaller than the height H1 of the first spacer 160. The material of the aforementioned spacer may be a dielectric material.

In addition, the area ratio of the first spacer 160 disposed in the display area 102 is preferably about 0.5%-10%, more preferably 0.5%-4%. The area ratio of the second spacer 162 disposed in the peripheral region 104 is preferably about 0.5%-10%, and more preferably 0.5%-4%. The area ratio of the third spacer 164 used as a buffer spacer is preferably about 0.5%-10%, more preferably 0.5%-4%.

With this configuration, the distance between the color filter substrate 110 and the array substrate 130 can be maintained at a certain distance (or close to a certain distance, for example, the distance between the color filter substrate 110 and the array substrate 130 is The distance is less than 10 microns), so it can prevent the filling material 150 from being unevenly stressed at the junction of the display area 102 and the peripheral area 104, thereby reducing the occurrence of layer peeling. Yes, thereby improving the yield of the display panel 100B, and by adjusting the setting of the appropriate height and area ratio of the spacer, the viewing angle can also be improved and color shift can be avoided.

Although Figure 2A shows the top view shape of the spacer as a circle, the content of the disclosure is not limited to this geometric figure. In other embodiments, the spacer can also be formed such that the top view shape is rectangular, Oval, beveled rectangle or other polygons.

Please refer to FIG. 3 again, which is a schematic cross-sectional view of the display panel 100C according to the third embodiment of the present disclosure. At least one difference between this embodiment and the second embodiment is that the display panel 100C may further include a third color resist layer 170 and a fourth color resist layer 172.

The third color resist layer 170 and the fourth color resist layer 172 are jointly disposed between the first substrate 112 and the second light shielding layer 122, and the fourth color resist layer 172 is disposed on the third color resist layer 170 and the second light shielding layer between. The first color resist layer 114 and the third color resist layer 170 may be color resist layers of the same color, and the fourth color resist layer 172 may be the same as the first color resist layer 114, the second color resist layer, and the third color resist layer. 170 is a color resist layer of different colors. For example, the first color resist layer 114 and the third color resist layer 170 may be a blue color resist layer, the second color resist layer 116 may be a green color resist layer, and the fourth color resist layer 172 may be a red color resist layer . In addition, the thickness of the fourth color resist layer 172 may be less than the thickness of the first color resist layer 114.

The vertical projections of the third color resist layer 170, the fourth color resist layer 172, and the second light-shielding layer 122 on the first substrate 112 overlap each other. As a result, the second light-shielding layer 122 can be combined with the third color resist layer 170 and the first substrate 112. The four-color resist layer 172 jointly shields light, thereby further enhancing the effect of shielding light.

In addition, in this embodiment, since the first substrate 112 and the second The third color resist layer 170 and the fourth color resist layer 172 exist between the light shielding layer 122, so the height of the first light shielding layer 120 relative to the first substrate 112 is smaller than the height of the second light shielding layer 122 relative to the first substrate 112. In this regard, in order to avoid the possibility of generating bubbles in the filling material 150 due to insufficient space between the color filter substrate 110 and the array substrate 130, a first spacer 160 and a second gap may be formed on the fourth dielectric layer 129 The distance between the color filter substrate 110 and the array substrate 130 is maintained at a certain distance (or close to a specific distance, for example, the distance between the color filter substrate 110 and the array substrate 130 Greater than 1 micron).

The arrangement relationship of the first spacer 160, the second spacer 162, and the third spacer 164 can be the same as that of the second embodiment, that is, the first top surface 161 of the first spacer 160 and the second spacer 162 have The height of the second top surface 163 relative to the first substrate 112 is substantially the same, and the height of the first top surface 161 of the first spacer 160 relative to the first substrate 112 is greater than that of the third top surface 165 of the third spacer 164 relative to the first substrate 112. The height of a substrate 112 is not repeated here.

Please refer to FIG. 4 again. FIG. 4 is a schematic cross-sectional view of the display panel 100D according to the fourth embodiment of the present disclosure. At least one difference between this embodiment and the second embodiment is that the array substrate 130 of the display panel 100D of this embodiment may further include a support 180, and the support 180 is disposed on the pixel definition layer 138 and the sixth dielectric. Between layers 146. That is, the support 180 is positioned on the filling material 150 and is closer to the second substrate 132 relative to the first spacer 160 and the second spacer 162.

During the manufacturing process of the array substrate 130, the support 180 may provide a support function to facilitate the manufacturing process. For example, the light-emitting element 142 may not be formed Previously, the support 180 was formed first, and in the process of forming the light-emitting element 142, the support 180 was used to support the formed layer structure, thereby facilitating the manufacturing process of the light-emitting element 142.

In this regard, in order to prevent the support 180 from affecting the space between the color filter substrate 110 and the array substrate 130, the support 180 may be configured to be staggered from the spacer. For example, the vertical projection of the support 180 on the first substrate 112 and the vertical projection of the first spacer 160, the second spacer 162, and the third spacer 164 on the first substrate 112 can be separated from each other to avoid the support. The 180 will be located directly above the first spacer 160 or the second spacer 162, so as to provide enough space for the filling material 150 to achieve uniform coating. However, the content of the present disclosure is not limited to this. In other embodiments, when there is a support 180, the vertical projection of the support 180 on the first substrate 112 is related to the first spacer 160, the second spacer 162, and the The vertical projection of the third spacer 164 on the first substrate 112 may also at least partially overlap.

On the other hand, this embodiment also omits the first circuit layer (for example, the first circuit layer 126 in Fig. 1B), the second circuit layer (for example, the second circuit layer 128 in Fig. 1B) and the use To separate the dielectric layers (for example, the third dielectric layer 127 in FIG. 1B). That is to say, the structure in which the filling material 150 can be uniformly coated by adjusting the layer structure or adding spacers in the present disclosure can be applied in addition to display panels with matching touch circuit layers. For display panels without touch circuit layer. In other words, in this embodiment, a first circuit layer (for example, the first circuit layer 126 in FIG. 1B) and a second circuit layer (for example, the second circuit layer 128 in FIG. 1B) can also be added to separate them. Dielectric layer (for example, the third dielectric layer 127 in Figure 1B), or Other embodiments of the disclosure may omit these layers.

Please refer to FIG. 5 again. FIG. 5 is a schematic top view of the display panel 100E according to the fifth embodiment of the present disclosure. At least one difference between this embodiment and the second embodiment is that the arrangement density of the spacers of the display panel 100E of this embodiment is gradual in accordance with the flexibility of the display panel 100E. For the convenience of description, Fig. 5 shows a first direction D1 and a second direction D2. The first direction D1 is different from the second direction D2. For example, the first direction D1 is the longitudinal direction of Fig. 5, and the second direction D2 It is the lateral direction of Fig. 5, and the first direction D1 and the second direction D2 are orthogonal.

In this embodiment, the length of the display panel 100E in the first direction D1 is greater than its length in the second direction D2. When the flexibility of the display panel 100E is required for the display panel 100E to be folded along the first direction D1 For example, the display panel 100E can be folded on the dotted line L extending along the second direction D2, and the spacers near the dotted line L are more likely to affect each other due to the folding, so that the gaps near the dotted line L Objects have the possibility of structural collapse.

In this regard, in this embodiment, the arrangement density of the first spacer 160, the second spacer 162, and the third spacer 164 in the first direction D1 is gradual, for example, it is upward and downward from the dotted line L. From dense to sparse. With this configuration, it is possible to reduce the chance that the spacers close to the dotted line L will affect each other due to folding, thereby reducing the possibility of structural collapse of the spacers close to the dotted line L, so as to improve the reliability of the display panel 100E during folding . The area where the spacers are gradually sparsely drawn in FIG. 5 is only for illustration, which is used to facilitate understanding and not to limit the content of the disclosure. In other embodiments, the area where the spacers are gradually sparser may also be used. It corresponds to a part of the area of the display panel 100E.

In summary, the display panel of the present disclosure includes a color filter substrate, an array substrate and a filling material, wherein the filling material is disposed between the color filter substrate and the array substrate. By adjusting the layer structure of the color filter substrate, the filling material can be evenly coated between the color filter substrate and the array substrate, so as to prevent the filling material from generating bubbles during the coating process, thereby reducing the occurrence of layer peeling Opportunity, and therefore improve the yield of the display panel. On the other hand, the display panel can further include spacers to maintain a certain distance between the color filter substrate and the array substrate, so that the space therebetween can be sufficient for the filling material to be evenly coated, and by adjusting The setting of the appropriate height and area ratio of the spacer can also improve the viewing angle and avoid color shift.

Although the present invention has been disclosed in various embodiments as above, it is not intended to limit the present invention. Anyone who is familiar with this technique can make various changes and modifications without departing from the spirit and scope of the present invention. The scope of protection shall be subject to the scope of the attached patent application.

100A‧‧‧Display Panel

102‧‧‧Display area

104‧‧‧ Surrounding area

110‧‧‧Color filter substrate

112‧‧‧First substrate

114‧‧‧First color resist layer

116‧‧‧Second color resist layer

130‧‧‧Array substrate

132‧‧‧Second substrate

134‧‧‧Drive circuit layer

136‧‧‧Fifth dielectric layer

138‧‧‧Pixel definition layer

139A‧‧‧First opening

139B‧‧‧Second opening

118‧‧‧First dielectric layer

118A‧‧‧Part One

118B‧‧‧Part Two

120‧‧‧First shading layer

122‧‧‧Second shading layer

124‧‧‧Second dielectric layer

126‧‧‧First circuit layer

127‧‧‧The third dielectric layer

128‧‧‧Second circuit layer

129‧‧‧The fourth dielectric layer

140‧‧‧First electrode layer

141‧‧‧Conductive layer

142‧‧‧Light-emitting element

144‧‧‧Second electrode layer

146‧‧‧Sixth dielectric layer

150‧‧‧filling material

152‧‧‧colloid

1B-1B’‧‧‧line segment

A1‧‧‧First area

A2‧‧‧Second area

Claims (11)

A display panel has a display area and a peripheral area located outside the display area, and includes: a first substrate with flexibility; a first color resist layer disposed on the first substrate and positioned in parallel In the display area; a second color resist layer is arranged on the first substrate, and is located in the display area and adjacent to the first color resist layer; a first light-shielding layer is arranged in the first color On the resist layer; a second light-shielding layer is disposed on the first substrate and located in the peripheral area, and the height of the first light-shielding layer relative to the first substrate is different from that of the second light-shielding layer relative to the The height of the first substrate; a second substrate with flexibility; a light emitting element arranged on the second color resist layer and located between the second color resist layer and the second substrate; a filling Material, disposed between the first substrate and the second substrate, and between the first substrate and the light emitting element; and a second spacer, disposed on the second light-shielding layer, and located Between the first substrate and the second substrate, the second spacer has a second top surface, and the second top surface faces away from the first substrate. The display panel described in item 1 of the scope of the patent application further includes a glue disposed between the first substrate and the second substrate, and located in the peripheral area and on a single side of the display area. The display panel according to claim 2, wherein the colloid includes at least one metal particle therein. The display panel described in item 1 of the scope of patent application further includes: a first spacer disposed on the first light-shielding layer and located between the first substrate and the second substrate, wherein the first spacer A spacer has a first top surface, the first top surface faces away from the first substrate, and the height of the first top surface and the second top surface relative to the first substrate are substantially the same. According to the display panel of claim 4, the height of the first light shielding layer relative to the first substrate is greater than the height of the second light shielding layer relative to the first substrate. According to the display panel described in item 5 of the scope of patent application, there is no color resist layer between the second light shielding layer and the first substrate. As described in item 4 of the scope of patent application, the display panel further includes: a third spacer disposed on the first light shielding layer and located between the first substrate and the second substrate, wherein the second substrate The three-spacer has a third top surface, the third top surface faces away from the first substrate, and the height of the first top surface relative to the first substrate is greater than the height of the third top surface relative to the first substrate. The display panel described in item 4 of the scope of patent application further includes: a third color resist layer disposed between the first substrate and the second light-shielding layer; and a fourth color resist layer disposed on the first substrate Between the three-color resist layer and the second light-shielding layer, the height of the first light-shielding layer relative to the first substrate is smaller than the height of the second light-shielding layer relative to the first substrate. The display panel described in claim 4 further includes: a support, which is closer to the second substrate than the first spacer and the second spacer, and the support is perpendicular to the first substrate The projection is separated from the vertical projection of the first spacer and the second spacer on the first substrate. The display panel described in item 1 of the scope of patent application further includes: a plurality of first spacers located between the first substrate and the second substrate and contacting the filling material, wherein the first spacers Each has a first top surface, and the first top surfaces face away from the first substrate; and a plurality of second spacers are located between the first substrate and the second substrate and contact the filling material, wherein Each of the second spacers has a second top surface, the second top surfaces face away from the first substrate, and the heights of the first top surfaces and the second top surfaces relative to the first substrate are substantially The same, where the display surface The length of the plate in a first direction is greater than its length in a second direction, the first direction is different from the second direction, and the first spacers and the second spacers are in the first direction The upward configuration density is gradual. The display panel according to claim 1, wherein the light-emitting element includes at least one organic light-emitting layer.

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