TW201205176A - Electrophoretic display panel and fabricating method of the same - Google Patents

Abstract

An electrophoretic display panel including an array substrate, a light shielding layer, an opposite substrate and an electrophoretic display medium is provided. The light shielding layer is disposed on the array substrate and has an optical density larger than 1.5. The opposite substrate is disposed above the array substrate. The electrophoretic display medium is disposed between the light shielding layer and the opposite substrate.

Description

201205176

AU0912128 34652twf.doc/I VI. Description of the Invention: [Technical Field] The present invention relates to a display panel and a method of fabricating the same, and more particularly to an electrophoretic display panel and a method of fabricating the same. [Prior Art] In recent years, as various display technologies continue to flourish, products such as electrophoretic displays, liquid crystal displays, plasma displays, and organic light-emitting diode displays have been gradually commercialized after continuous research and development. It is applied to display devices of various sizes and various areas. With the popularity of portable electronic products, flexible displays (such as e-paper, e_bo〇k, etc.) have gradually gained market attention. In general, electronic paper (_e-paper) and e-book (e_b00k) use electrophoretic display technology to achieve the purpose. Taking an e-book showing black and white as an example, the sub-pixels are mainly driven by the color-retaining electrophoresis liquid and the white charged particles doped in the black electrophoresis liquid to drive the white charged particles to move. The alizarin shows black, white, or gray of different tones. In the prior art, the electrophoretic display half is the reflection of the external light source for the purpose of display, and the white charged particles doped by the electrophoresis liquid by the voltage driving can cause the respective sub-pixels to display the desired gray scale. Generally, the electric ice display is mainly composed of a thin film transistor array substrate, an electrophoretic display, a medium and a layer, wherein the electrophoretic display medium comprises a patterned dielectric layer defining a microcup structure and a microcup structure. (micro-cups) and located in the micro-cups & 201205176

AU0912128 34652twf.doc/I

The electrophoresis fluid and the charged particles are adhered to each other to bond the Lai transistor array substrate to the electrophoretic display medium. In the electrophoretic display H, the bismuth electrophoresis liquid can usually absorb the external light source to prevent the external light source from entering the thin film transistor array substrate. However, the electrophoresis liquid cannot completely absorb the external source, and thus some external light sources can pass through the pattern in the electrophoretic display medium. The dielectric layer or the electrophoresis liquid is irradiated onto the thin film transistor on the thin film transistor array substrate. As a result, the electrophoretic display has poor contrast and causes the photo transistor to generate a photo current which affects the characteristics of the device, resulting in poor display quality of the electrophoretic display. Therefore, it has been proposed to use a dark-curable adhesive such as cyanoacrylate glue to bond a thin film transistor array substrate and an electrophoretic display medium to withstand an external light source. However, a dark thermosetting adhesive such as a cyanoacrylate adhesive has a transmittance of about 30% and a thickness of 4 μm or more. Therefore, it is necessary to increase the thickness of the adhesive to increase the optical density. As a result, the choice of adhesive materials is limited, and the overall thickness of the electrophoretic display is reduced, and the use of these adhesive materials still fails to achieve satisfactory shading. 'How to reduce the external light source Poor contrast and light have become one of the problems in this area. Therefore, the flow problem, the present invention provides an electrophoretic display panel and a form thereof, and has a preferred display article f. 4 liter pair The present invention provides an electrophoretic display panel comprising an array substrate, 5 201205176

AU0912128 34652twf.doc/I Light shielding layer, a pair of substrates and an electrophoretic display medium. The light shielding layer is disposed on the array substrate' and the optical density of the light shielding layer is higher than 1.5. The opposite substrate is disposed above the array substrate. The electrophoretic display medium is disposed between the light shielding layer and the opposite substrate. The invention further provides a method for manufacturing an electrophoretic display panel, comprising the following steps. An array substrate is provided. A light shielding layer is formed on the array substrate. A pair of substrates is provided, and the opposite substrate includes a common electrode. An electrophoretic display is formed on the opposite substrate. The light shielding layer is adhered to the electrophoretic display medium by an adhesive layer, wherein the electrophoretic display medium is located between the light shielding layer and the opposite substrate. The present invention proposes another method of manufacturing an electrophoretic display panel, comprising the following steps. An array substrate is provided. A light shielding layer and an electrophoretic display medium are sequentially formed on the array substrate. Providing a pair of substrates 'opposing substrates includes a common electrode. The opposite substrate is adhered to the electrophoretic display medium by an adhesive layer, wherein the electrophoretic display medium is located between the array substrate and the opposite substrate. The electrophoretic display panel based on the above invention comprises a light shielding layer which blocks an external light source from entering the array substrate. In this way, the electrophoretic display panel has better contrast and can avoid the problem of light leakage current of the array substrate, so as to improve the display quality of the electrophoretic display panel. The above described features and advantages of the invention will be apparent from the following description. [Embodiment] FIG. 1 is a cross-sectional view showing an electrophoretic display panel according to an embodiment of the present invention. Referring to FIG. 1, the electrophoretic display panel 1 includes an array substrate 11 ' 201205176

AU0912128 34652twf.doc/I A light shielding layer 130, a pair of substrates 140, and an electrophoretic display medium 150. In the present embodiment, the array substrate 110 and the opposite substrate 140 are, for example, flexible substrates, and thus the electrophoretic display panel 100 is, for example, a flexible display panel. The array substrate 110 is, for example, an active device array substrate, and includes a substrate 112 and a plurality of active elements 114 and a plurality of halogen electrodes 128 disposed on the substrate 112, and the pixel electrodes 128 are electrically connected to the active elements 114. The active device 114 is, for example, a thin film transistor, and the active device 114 is mainly composed of a gate 116, a gate insulating layer 118 covering the gate 116, a channel layer 120 above the gate 116, a source 122S and a drain 122D. An insulating layer 124 covering the source 122S and the drain 122D and a protective layer 126 are formed. The gate 116 and the source 1225 are respectively electrically connected to a scan line (not shown) and a data line (not shown). The halogen electrode 128 is electrically connected to the opening of the protective layer 128 and the gate 122D through the insulating layer 124. The light shielding layer 130 is disposed on the array substrate 11A, and the light shielding layer 13 is covered on the array substrate 11 for example. . In the present embodiment, the light shielding layer 13 includes, for example, a black matrix layer, and the material thereof includes, for example, a photocurable resin, a metal, or a combination thereof. It is to be noted that the photocurable resin is, for example, a light-shielding dye carrier added to a photosensitive polymer resin having a reactive substituent such as a hydroxyl group, a carboxyl group or an amine group, or a reactive substituent such as an alkali group or an epoxy group. (曱基)_ an acid compound or a polymer resin having a hetero acid-reactive sulfhydryl-glycolyl group, a phenethyl group or the like, and a light-shielding pigment carrier, wherein the light-shielding pigment carrier rides or an inorganic pigment such as carbon A mixture of black, aniline black, the f-color pigment, and the black pigment of the flower. In another embodiment, the metal described is, for example, chromium. The optical density of the light shielding layer 130 is, for example, 201205176

AU0912128 34652twf.doc/I is higher than 1.5, and the thickness of the light shielding layer 130 is, for example, less than 4 um. In the present embodiment, the transmittance of the light shielding layer 130 is, for example, less than 3%, that is, the light shielding layer 130 has a high light shielding property, thereby effectively blocking the external light source from entering the array substrate 110. The electrophoretic display medium 150 is disposed between the light shielding layer 130 and the opposite substrate 140. In the present embodiment, the electrophoretic display medium 15 includes, for example, a microcup structure 152, an electrophoretic fluid 154, a plurality of charged particles 156, and a tie layer 158. Electrophoresis fluid 154 is located within microcup structure 152. Charged particles 156 are distributed in the electrophoresis fluid 154. Sealing layer 158 is bonded to microcup structure 152 to seal electrophoretic fluid 154 and charged particles 156 within microcup structure 152. In the present embodiment, the material of the microcup structure 152 is, for example, a dielectric material. The material of the sealing layer 158 is, for example, an epoxy resin. The electrophoresis liquid 154 is, for example, a black electrophoresis liquid, and the charged particles 156 are, for example, white charged particles. Of course, in other embodiments, the electrophoresis liquid 154 and the charged particles 156 may have other colors. It is to be noted that although in the present embodiment, the structure in which the electro-deduction medium 15G has a filament is taken as an example, the f-swivel display medium 15 of the electrophoretic display panel 1GG may have other structures 'again, although FIG. 1 is The active element 114 and the microcup structure 152(4) are in the form of a one-to-one combination, but substantially the dynamic element 114 and the microcup structure 152 may be in a many-to-one combination. H Benfa County's electrophoresis in the panel of the electric Lai* panel f 15G plus recording, slave_media is any electrophoretic display medium suitable for electrophoretic display panel. The counter substrate 140 is disposed above the array substrate 11A. In the present embodiment, the opposite substrate 140 includes a substrate 142 spot 'a j. double % 舆 a common electrode 144. Substrate 142 such as 201205176

AU0912128 34652twf.doc/I is flexible, such as a polycarbonate (PC) substrate or a polyester (PET) substrate. The material of the common electrode 144 is, for example, a transparent metal. , such as indium tin oxide. In this embodiment, the electrophoretic display panel 100 further includes an adhesive layer 16 (eg, the adhesive layer 160 is adhered between the light shielding layer 13 〇 and the electrophoretic display medium 15 ,, and particularly adhered to the light shielding layer 130 and the sealing layer. Between the 158, the array substrate 110 and the electrophoretic display medium 150 are bonded. In other words, the array substrate 11 and the electrophoretic display medium 150 are bonded to each other by the adhesive layer 160. In the embodiment, the adhesive layer 160 is, for example, a transparent material or An opaque material, wherein the transparent material comprises a material such as polyacrylate. In particular, the thickness of the adhesive layer 16 is, for example, 2 um. In the present embodiment, the electrophoretic display panel 1 〇〇 includes a light shielding layer 13 〇, and the light shielding layer 130 is disposed at Between the array substrate 11A and the electrophoretic display medium 15〇, the external light source is prevented from entering the array substrate via the electrophoretic display medium 150, so that the external light source can be prevented from being irradiated onto the active device 114 of the array substrate 110. Problems such as occurrence of light leakage current cause the active element Π 4 to have better element characteristics. Furthermore, since the light shielding layer 130 can effectively block external light sources, it can be increased. The state of light absorption efficiency greatly improves the contrast of the electrophoretic display panel. Further, since the electrophoretic display panel 100 is a film layer which is mainly used to block the external light source, the light shielding property is not the adhesive layer 16〇 in the material selection^ An important consideration is that the adhesive layer 160 can be a transparent material and can have a small thickness. In other words, the setting of the light-shielding layer U0 enhances the thickness of the adhesive layer (10) and selectively reduces the thickness of the adhesive layer 160. Yes, due to 201205176

AU0912128 34652twf.doc^I The light-shielding layer 130 generally has a large optical density, so that a good light-shielding effect and a small transmittance can be achieved at a small thickness. Therefore, the electrophoretic display panel of the present embodiment has good display quality and a small overall thickness to meet the requirements of the consumer for the display panel. 2A to 2C are schematic flowcharts of a method for manufacturing an electrophoretic display panel according to an embodiment of the present invention. The components and materials of the electrophoretic display panel can be referred to in the previous embodiment, and are not described in detail herein. Referring to FIG. 2A, first, an array substrate 110 is provided, and then a light shielding layer 130 is formed on the array substrate 11A. In the present embodiment, the array substrate 11 is, for example, an active device array substrate, and its detailed structure can be referred to the drawings and related descriptions. The light shielding layer 13 is formed, for example, by a black matrix layer, and is formed by, for example, forming a whole layer of a black matrix material layer (not shown) on the halogen electrode 128 of the array substrate 110 by spin coating to cover the array substrate. 110. The black matrix material layer is irradiated with light such as ultraviolet light to form a light shielding layer 130. The material of the light shielding layer 13 is, for example, a photocurable resin, a metal or a combination thereof. It is to be noted that the photocurable resin described above is, for example, a light-shielding dye carrier added to a photosensitive polymer resin having a reactive substituent such as a hydroxyl group, a carboxyl group or an amine group, or a reactive substituent such as a substituent or an epoxy group. (a mercapto group) or a polymer resin having a photocrosslinkable group such as a mercaptopropene group having a cinnamic acid reaction or a photocrosslinkable group such as a styryl group, and a shading pigment carrier is used as an organic or probiotic pigment. It is a mixture of carbon black, stupid amine black, 蒽_'black pigment 1 black pigment, and the like, and the aforementioned metal is, for example, a complex. The optical density of the light shielding layer (10) is, for example, higher than 1.5. In this embodiment, the thickness of the light shielding layer (10) is, for example, 201205176.

AU0912128 34652twf.doc/I The gazelle 4um, and the transmittance of the light-shielding layer i3〇 is, for example, less than 3% β. Referring to FIG. 2Β, then, the opposite substrate 14〇 is provided, and the opposite substrate 14 includes a common electrode. 144. In the present embodiment, the counter substrate 14 is formed by, for example, forming a common electrode 144 on the substrate 142. The material of the substrate ία is, for example, polyester, and the material of the common electrode 144 is, for example, a transparent metal such as, for example, indium tin oxide. Then, an electrophoretic display medium 150 is formed on the opposite substrate 14 . In the present embodiment, the electrophoretic display medium 150 is formed, for example, on the common electrode 144, and its formation step is as follows. First, a microcup structure 152 is formed on the common electrode 144. For example, a dielectric material layer (not shown) is formed on the common electrode 144. Then, a dielectric etching process is performed on the dielectric material layer to dielectrically. The material layer is patterned into a microcup structure 152. Next, the electrophoresis liquid 154 is filled in the microcup structure 152, and the electrophoresis liquid 154 is, for example, a black electrophoresis liquid. Then, a plurality of charged particles 156 are distributed in the electrophoresis liquid 154, and the charged particles 156 are, for example, white charged particles. Next, the electrophoretic fluid 154 and the charged particles 156 are sealed in the microcup structure 152 by a layer 158. The material of the 'sealing layer 158' is, for example, an epoxy, which is formed, for example, by photocuring or heat curing. Referring to Figure 2C, the light-shielding layer is then adhered to the electrophoretic display medium 150 by an adhesive layer 160, wherein the electrophoretic display medium 15 is positioned between the light-shielding layer '13' and the opposite substrate 140. In other words, in the present embodiment, the light shielding layer 13 on the array substrate 11A of FIG. 2 is bonded to the electrophoretic display medium 150 on the opposite substrate 140 of FIG. 2 by the adhesive layer 160 to bond the array substrate. 110 and the opposite substrate 14 are formed and an electrophoretic display panel 1 is formed. Adhesive layer 16 such as 201205176

AU0912128 34652twf.doc/I is a transparent material including, for example, polyacrylic acid vinegar, which is formed by, for example, heating and rolling, and has a thickness of, for example, 2 μm. It is to be noted that although the electrophoretic display medium 15 has the structure shown in Fig. 2B as an example in the present embodiment, the electrophoretic display medium 15 in the electrophoretic display panel 1 can have other structures. In the present embodiment, the electrophoretic display medium 150 is formed on the opposite substrate 140, and the array substrate 11 and the electrophoretic display medium 150' are bonded by the adhesive layer 160 to form the electrophoretic display panel 100. In particular, before the array substrate ιι〇 # and the electrophoretic display medium 150 are bonded, the "shading layer 1-30 is formed on the array substrate 11'. Therefore, in the electrophoretic display panel 100, a light shielding layer 130' is disposed between the array substrate 11A and the electrophoretic display medium 150 to effectively block the external light source from entering the array substrate 11 via the electrophoretic display medium 150 (^ such that the outside can be avoided The light source is irradiated on the active device 114 of the array substrate 110 to cause problems such as light leakage current, so that the active device 114 has better component characteristics. Furthermore, since the light shielding layer 130 can effectively block the external light source, the dark state light absorption can be increased. The efficiency of the electrophoretic display is greatly improved: the ratio of the panel 100. In addition, in the electrophoretic display panel 100, the light shielding layer 130 is used as a main blocking external light source = film layer, so the light shielding property is not important for the material selection of the adhesive layer 160. Considering the factors, the adhesive layer 160 may be a transparent material and may have a small degree. In other words, the arrangement of the light shielding layer 130 increases the selectivity of the material of the adhesive layer 16〇 and greatly reduces the thickness of the adhesive layer 16〇. It is 'Because the cover 130 usually has a large optical button, @ this record can achieve a good shading effect and a small penetration. Therefore, the present embodiment of the swimming = 12,201,205,176

AU0912128 34652twf.doc/I The display panel has good display quality and can have a small overall thickness to meet consumer requirements for display panels. 3 is a schematic cross-sectional view of a touch-type electrophoretic display panel of the present invention, wherein the components of the electrophoretic display panel 100 of FIG. 3 and the electrophoretic display panel 10G (10) of the figure are substantially (four)' The arrangement of the components will be described. The material of the components can be described in the previous embodiment, and will not be described herein. Referring to FIG. 3, the electrophoretic display panel should include an array substrate 110, a light shielding layer 130, an electrophoretic display medium 15A, a pair of substrates 140, and an adhesive layer 16A. The light shielding layer 13 is disposed on the array substrate 110. The counter substrate 140 is disposed above the array substrate 11A. The electrophoretic display medium 150 is disposed between the light shielding layer 130 and the opposite substrate 140. The adhesive layer 16 is, for example, adhered between the opposite substrate 140 and the electrophoretic display medium 150. The structure of the array substrate 110 and the opposite substrate 140 can be referred to in the previous embodiment, and will not be described herein. In the present embodiment, the electrophoretic display medium 150 includes, for example, a microcup structure 152, an electrophoresis liquid 1.54 located in the microcup structure. 15.2, a plurality of charged particles 156 distributed in the electrophoresis liquid 154, and a layer 158. . The opening of the microcup structure 152 is, for example, facing the opposite substrate 14 , so that the sealing layer 158 is disposed between the adhesive layer 160 and the microcup structure 152, for example, to engage with the microcup structure 152, and the electrophoresis liquid 154 The charged particles 156 are enclosed within the microcup structure 152. That is, in the present embodiment, the microcup structure 152 and the sealing layer 158 are disposed, for example, sequentially and directly on the light shielding layer 130, so that the light shielding layer 130 is in direct contact with the microcup structure 152. In addition, the adhesive layer 160 is adhered, for example, to the opposite substrate 13 201205176

Between the AU0912128 34652twfdoc/I HO and the sealing layer 158, the counter substrate 140 and the electrophoretic display medium 150 are bonded, and the counter substrate 14A and the array substrate 11 are bonded. The adhesive layer 16 is, for example, comprised of a transparent material such as a polyacrylate having a thickness of, for example, 2 um. It is to be noted that although the electrophoretic display medium 150 having the structure shown in Fig. 3 is taken as an example in the present embodiment, the electrophoretic display medium 150 may have other structures, which are not limited in the present invention. In the present embodiment, the light shielding layer 130 is disposed on the array substrate 11', and the light shielding layer 130 is entirely covered on the array substrate 11A, for example. In the present embodiment, the light shielding layer 130 includes, for example, a black matrix layer, and the material thereof includes, for example, a photocurable resin, a metal, or a mixture comprising the above. It is to be noted that the photocurable resin is, for example, a light-shielding dye carrier added to a photosensitive polymer resin having a reactive substituent such as a hydroxyl group, a carboxyl group or an amine group, or a reactive substituent such as an aldehyde group or an epoxy group. a (meth)acrylic compound or a polymer resin having a photocrosslinkable group such as a mercaptopropenyl group or a styryl group which is reacted with cinnamic acid, wherein a light-shielding pigment carrier is added, wherein the light-shielding pigment carrier is an organic or inorganic pigment, for example, carbon black A mixture of stupid amine black, anthraquinone black pigment, an anthraquinone black pigment, and the like, and the aforementioned metal is, for example, chromium. The optical density of the light shielding layer 13 is, for example, higher than 1.5, and the thickness of the light shielding layer 130 is, for example, less than 4 μm. In the present embodiment, the transmittance of the light shielding layer 130 is, for example, less than 3%, that is, the light shielding layer 130 has a high light shielding property', thereby effectively blocking the external light source from entering the array substrate 110. In the present embodiment, the electrophoretic display panel 100a includes a light shielding layer 130 disposed between the array substrate 110 and the electrophoretic display medium 15〇 to block 14 201205176

AU0912128 34652twf.doc/I The external light source enters the array substrate 11 via the electrophoretic display medium 15 (which can prevent the external light source from being irradiated onto the active device 114 of the array substrate 11 and cause light leakage current, etc., so that the active The component 114 has better component characteristics. Further, since the light shielding layer 130 can effectively block the external light source, the dark state light absorption efficiency can be increased to greatly improve the contrast of the electrophoretic display panel 1〇〇3. Further, in this embodiment The electrophoretic display medium 15〇 can be directly disposed on the light shielding layer 130 without additional use of an adhesive layer for bonding, thereby reducing the overall thickness of the electrophoretic display panel 100a. In particular, since the light shielding layer generally has a large optical density. Therefore, a good light-shielding effect and a small transmittance can be achieved at a small thickness. Therefore, the electrophoretic display panel of the embodiment has good display quality and has a small overall thickness to conform to the consumer's FIG. 4A to FIG. 4C are diagrams showing a method of manufacturing an electrophoretic display panel according to an embodiment of the present invention; It is not intended that the components of the electrophoretic display panel can be referred to in the first embodiment, which will not be described in detail herein. Referring to FIG. 4A, firstly, the array substrate 11 is provided. Layer 130 / and - electrophoretic display medium 15 () () In this embodiment, the array substrate ιι, such as an active device array substrate, the detailed structure of which can be referred to Figure 1 and its related description. The light shielding layer 13G is, for example, - black The matrix layer is formed by, for example, forming a whole layer of a black matrix material layer (not (4)) on the halogen electrode 128 of the spin-coated substrate 11G to cover the scale substrate UG, such as ultraviolet light. The light illuminates the black matrix material layer to cure it into the light shielding layer 13 〇. The material of the 'light shielding layer 130 </ RTI> includes, for example, a photocurable resin, a metal or a combination of the above 15 201205176 AU0912128 34652 twf.doc/l. The photocurable resin is, for example, a light-shielding dye carrier added to a photosensitive polymer resin having a reactive substituent such as a hydroxyl group, a carboxyl group or an amine group, or a reactive substituent such as an aldehyde group or an epoxy group. Propylene A light-shielding pigment carrier is added to an acid compound or a polymer resin having a photocrosslinkable group such as a mercaptopropenyl group or a strepto vinyl group which is reacted with cinnamic acid, wherein the light-shielding pigment carrier is an organic or inorganic pigment such as carbon black or anthranamine. A mixture of black, anthraquinone black pigment, lanthanide black pigment, and the like, and the foregoing metal is, for example, chromium. The optical density of the light shielding layer 130 is, for example, higher than 15. In the present embodiment, the thickness of the light shielding layer 130 is, for example, The transmittance of the light shielding layer 13 is, for example, less than 3%. In the present embodiment, the electrophoretic display medium 150 is directly formed on the light shielding layer, for example, and the forming step is as follows. First, a The microcup structure 152 is disposed on the light shielding layer 130. This step is, for example, forming a dielectric material layer (not shown) on the light shielding layer 13 (), and then performing a photolithography etching process on the dielectric material layer to laminate the dielectric material layer. The microcup structure 152 is formed into a pattern such that the dielectric material layer has a plurality of openings to form the microcup structure 152. Next, the electrophoresis liquid 154 filled in the microcup structure 52 is, for example, a black electrophoresis liquid. Then, a plurality of charged particles 15 are distributed in the electrophoresis liquid 154, and the charged particles 156 are, for example, white charged particles: Next, the electrophoresis liquid 154 and the charged particles 156 are sealed by a bonding layer 158: in the microcup, the material of the sealing layer 158 is, for example, an epoxy resin, and the forming method is, for example, photocuring. Or heat curing. Referring to FIG. 4B, then a pair of substrates 140 are provided, and the counter substrate 14 includes a common electrode 144. In this embodiment, the opposite substrate 14 () is produced 16 201205176

The AU0912128 34652twf.doc/I method is, for example, forming a common electrode 144 on the substrate 142. The material of the substrate i42 is, for example, polyester, and the material of the common electrode 144 is, for example, a transparent metal such as, for example, steel tin oxide. . Referring to FIG. 4C, the opposite substrate 14A is adhered to the electrophoretic display medium 150 by an adhesive layer 16A, wherein the electrophoretic display medium 15 is located between the array substrate 110 and the opposite substrate 140. In other words, in the present embodiment, the electrophoretic display medium 15A on the array substrate 11A of Fig. 4A is bonded to the opposite substrate 14 of Fig. 4B by the adhesive layer 160 to form an electrophoretic display panel 1 &amp; Wherein, the adhesive layer 160 is, for example, a transparent material such as polyacrylate, and is formed by, for example, heating and rolling. Special attention is given to the fact that, in the present embodiment, the electrophoretic display medium 150 has The structure shown in FIG. 4A is an example 'but the electrophoretic display medium 150 in the electrophoretic display panel 10a may have other structures. In the present embodiment, the light-shielding layer 130 and the electrophoretic display medium 150 are sequentially formed on the array substrate 110, and the electrophoretic display medium 15〇 and the opposite substrate 14 on the array board 110 are bonded by the adhesive layer 160 to The electrophoretic display panel 100a is formed. Therefore, in the electrophoretic display panel 10〇3, a light shielding layer π〇 is disposed between the array substrate 11〇 and the electrophoretic display medium 150 to effectively block the external light source from entering the array substrate 110 via the electrophoretic display medium 150. The problem that the external light source is irradiated onto the active device 114 of the array substrate 11 to cause a light leakage current or the like causes the active device 114 to have better component characteristics. Moreover, since the light shielding layer 130 can effectively block the external light source, the dark state light absorption efficiency can be increased to greatly increase the contrast of the electrophoretic display panel 100&amp; In addition, 17 201205176

AU0912128 34652twf.doc/I In this embodiment, the electrophoretic display medium 15〇 can be directly disposed on the light shielding layer without splicing the electrophoretic display medium i5〇 and the light layer 130 ′ through an additional adhesive layer, thereby simplifying the electrophoretic display The manufacturing process of the panel 1A reduces the overall thickness of the electrophoretic display panel 100a. In particular, since the light-shielding layer 〇3〇 usually has a large optical density&apos;, a good light-shielding effect and a (four) transmittance are observed at a (four) thickness. Therefore, the electrophoretic display panel of the present embodiment has good display quality and can have a small overall thickness to meet the requirements of the display panel. It is to be noted that although the structure of the electrophoretic display panels 100 and 100a shown in FIGS. 1 and 3 is taken as an example in the above embodiment, the electrophoretic display panel of the present invention may have other structures. In addition, FIG. 2A The method of manufacturing the electrophoretic display panel described in FIG. 2C and FIG. 4a to FIG. 4C is also only one of various processes for fabricating the electrophoretic display panel of the present invention, and is not intended to limit the present invention. In summary, in the implementation, the electrophoretic display panel includes a light shielding layer, and the light shielding layer is disposed on the _ silk Wei _ medium H to block the external light source from entering the barrier substrate via the electrophoretic display. In this way, it is possible to prevent the external light source from being incident on the active elements of the array substrate and causing the light leakage current to cause the active element to have better element characteristics. Moreover, since the light shielding layer ί effectively blocks the external filament, the dark state light absorption efficiency can be increased to greatly increase the contrast of the electrophoretic display panel. In addition, since the electrophoretic display panel is a light-shielding layer as a film layer mainly blocking the external light source, the light-shielding property is not an important factor in the material selection of the adhesive layer, so the adhesive layer may be a transparent material. It can also have a small thickness, in other words, the 'shading layer' arrangement increases the selectivity of the material of the adhesive layer and greatly reduces the thickness of the adhesive layer. In addition, in an embodiment, the electrophoretic display medium can be directly disposed on the light shielding layer without bonding the electrophoretic display medium and the light shielding layer through an additional adhesive layer, thereby simplifying the processing steps of the electrophoretic display panel and reducing the electrophoretic display panel. The overall thickness. Furthermore, since the light-shielding layer usually has a large optical density, a good light-shielding effect and a small transmittance can be obtained at a small thickness. Therefore, the electrophoretic display panel of the present embodiment has good display quality and can have a small overall thickness to meet the consumer's requirements for the display panel. The present invention has been disclosed in the above embodiments, but it is not intended to be a part of the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing an electrophoretic display panel according to an embodiment of the present invention. @2A to Fig. 2C is a flow chart showing a method of manufacturing an electrophoretic display panel according to an embodiment of the invention. 3 is a view showing a - (four) swimming display panel of the present invention - FIG. 4A to FIG. 4C are an electrophoretic display panel according to an embodiment of the present invention 201205176

Schematic diagram of the manufacturing method of AU0912128 34652twf.doc/I. [Main component symbol description] 100, 100a: electrophoretic display panel 110: array substrate 112, 142: substrate 114: active device 116: gate 118: gate insulating layer 120: channel layer 122D: drain 122S: source 124: insulation Layer 126: protective layer 128: pixel electrode 130: light shielding layer 140: opposite substrate 144: common electrode 150: electrophoretic display medium 152: microcup structure 154: electrophoresis liquid 156: charged particle 158: sealing wide 160: adhesive layer 20

Claims (1)

201205176 AU0912128 34652twf.d〇c/I VII. Patent application scope: 1. An electrophoretic display panel comprising: an array substrate; a light shielding layer disposed on the array substrate, the optical density of the light shielding layer is high At 1.5; a pair of substrates disposed above the array substrate; and an electrophoretic display medium disposed between the light shielding layer and the opposite substrate. 2. The electrophoretic display panel of claim 1, wherein the array substrate and the counter substrate are flexible substrates. 3. The electrophoretic display panel of claim 1, wherein the array substrate comprises a plurality of active components and a plurality of pixel electrodes, and the halogen electrodes are electrically connected to the active components. 4. The electrophoretic display panel of claim 1, wherein the opposite substrate comprises a common electrode. The electrophoretic display panel of claim 1, wherein the light shielding layer comprises a black matrix layer. 6. The electrophoretic display panel according to claim 1, wherein the light shielding layer has a transmittance of less than 3 Å/〇. 7. The electrophoretic display panel according to claim 1, wherein the The thickness of the light-shielding layer is less than 4 um. 8. The electrophoretic display panel according to the above-mentioned patent application, wherein the material of the mask layer comprises a photocurable resin, a metal or a combination thereof. The electrophoretic display panel, wherein the electric 21 201205176 AU0912128 34652twf.doc/I swimming display medium comprises: a microcup structure; an electrophoresis liquid 'located in the microcup structure; a plurality of charged particles distributed in the electrophoresis liquid; And a layer of the electrode is bonded to the microcup structure to seal the electrophoretic liquid and the charged particles in the microcup structure. 10. The electrophoretic display panel of claim 9 further includes The adhesive layer is adhered between the light shielding layer and the sealing layer. The electrophoretic display panel according to claim 9, further comprising an adhesive layer adhered to the opposite substrate and the sealing layer Floor The electrophoretic display panel of the first aspect of the invention, further comprising an adhesive layer adhered between the light shielding layer and the electrophoretic display medium, wherein the light shielding layer is in direct contact with the microcup structure. The electrophoretic display panel of claim 1, wherein the light shielding layer is comprehensively covered on the array substrate. 14. A method for manufacturing an electrophoretic display panel, comprising: providing an array substrate; Forming a light shielding layer on the array substrate; providing a pair of substrates, the opposite substrate includes a common electrode; forming an electrophoretic display medium on the opposite substrate; and using the adhesive layer to make the light shielding layer and the electrophoretic display The medium is adhered to, wherein the electrophoretic display medium is located between the light shielding layer and the opposite substrate. 15. The method of manufacturing an electrophoretic display panel according to claim 14 of the claim 22 201205176 AU0912128 34652twf.doc/I, wherein the method is formed The step of electrophoretic display medium comprises: forming a microcup structure on the common electrode; filling an electrophoresis liquid in the microcup structure; Storing a plurality of charged particles in the electrophoresis liquid; and sealing the electrophoretic liquid and the charged particles in the microcup structure by using a lamination layer. 16. The electrophoretic display according to claim 14 The manufacturing method of the panel, wherein the array substrate comprises a plurality of active elements and a plurality of halogen electrodes ' and the pixel electrodes are electrically connected to the active elements. 17. The method for manufacturing an electrophoretic display panel includes: providing An array substrate; a light shielding layer and an electrophoretic display medium are sequentially formed on the array substrate; ^ for a pair of substrates, the opposite substrate includes a common electrode; and the opposite substrate is formed by using an adhesive layer The electrophoretic display medium is adhered, wherein the electrophoretic display medium is located between the array substrate and the opposite substrate. 18. The method of manufacturing an electrophoretic display panel as described in claim π, wherein the step of forming the electrophoretic display medium comprises: forming a microcup structure on the light shielding layer; filling an electrophoresis liquid in the microcup structure Distributing a plurality of charged particles in the electrophoresis liquid; and sealing the electrophoretic liquid and the charged particles into the microcup structure by using a layer. 19. The method of manufacturing an electrophoretic display panel according to claim 18, wherein the method of forming the microcup structure comprises using a lithography process. 20. The method of manufacturing an electrophoretic display panel according to claim 17, wherein the array substrate comprises a plurality of active elements and a plurality of pixel electrodes, and the halogen electrodes are electrically connected to the active elements. twenty four