Peep-proof panel
By setting a liquid crystal layer and frame adhesive in the substrate structure of the privacy panel, and arranging uncovered dummy electrode blocks in the peripheral area, the problem of insufficient flatness of the substrate structure is solved, thereby improving the uniformity of light transmission and the performance of the privacy panel.
Patent Information
- Application Number
- CN202410537246.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-10-31
AI Technical Summary
Existing privacy panels suffer from poor light transmission uniformity due to insufficient flatness of the substrate structure during manufacturing, which affects product performance.
A liquid crystal layer and a frame adhesive are disposed between the first substrate structure and the second substrate structure, and dummy electrode blocks are arranged in the peripheral area to ensure that the dummy electrode blocks are not covered in the normal direction of the substrate, with an area ratio of 80% to 90%, so as to increase the flatness of the substrate structure.
It improves the uniformity of light transmission, avoids excessive coupling capacitance between the virtual electrode block and other components, and enhances the performance of the privacy panel.
Smart Images
Figure CN120871477A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to privacy technology, and more particularly to a privacy panel with dummy electrode blocks. Background Technology
[0002] Most modern display devices offer wide viewing angles. However, in certain scenarios, such as when handling confidential or personal information, the wide viewing angle can allow others to see the information, potentially leading to data leakage. To mitigate this risk, a privacy panel can be added to the display device to reduce the viewing angle and prevent peeping. However, the manufacturing of privacy panels may encounter performance issues due to insufficient flatness of the substrate structure. Summary of the Invention
[0003] The purpose of this invention is to provide a privacy panel that can increase the flatness of the substrate structure, thereby improving the uniformity of light transmission.
[0004] To achieve the above objectives, the present invention provides a privacy panel comprising a first substrate structure, a second substrate structure, a liquid crystal layer, and a sealant. The first substrate structure includes a first substrate and a light-transmitting conductive layer, wherein the light-transmitting conductive layer has a first privacy electrode and a plurality of first dummy electrode blocks. The second substrate structure is disposed opposite to the first substrate structure and includes a second substrate and a second privacy electrode. The liquid crystal layer is located between the first privacy electrode and the second privacy electrode. The sealant is located between the first substrate structure and the second substrate structure and surrounds the liquid crystal layer. The first substrate has a peripheral region located outside the sealant, and the first dummy electrode blocks are located in the peripheral region.
[0005] According to one embodiment of the present invention, the layout area of these first dummy electrode blocks is 80% to 90% of the area of the peripheral region that is not covered by the second substrate structure in the normal direction of the first substrate.
[0006] According to another embodiment of the present invention, the light-transmitting conductive layer further includes a connecting electrode, a first connecting pad, and a second connecting pad, wherein the connecting electrode is located directly below the frame adhesive and is electrically connected to the second privacy electrode via the frame adhesive, and the first connecting pad and the second connecting pad are respectively connected to the first privacy electrode and the connecting electrode and are both located in the peripheral area.
[0007] According to another embodiment of the present invention, some of these first dummy electrode blocks are located between the first connecting pad and the second connecting pad.
[0008] According to another embodiment of the present invention, the light-transmitting conductive layer further includes a third connecting pad and a fourth connecting pad, wherein the third connecting pad and the fourth connecting pad are both located in the peripheral area, the second connecting pad and the fourth connecting pad are respectively connected to the two ends of the connecting electrode, and the third connecting pad is connected to the first privacy electrode.
[0009] According to another embodiment of the present invention, some of the first dummy electrode blocks are located between the first connecting pad and the second connecting pad, and between the third connecting pad and the fourth connecting pad.
[0010] According to another embodiment of the present invention, the first substrate structure and the second substrate structure further include a first alignment layer and a second alignment layer, wherein the first alignment layer is located between the first privacy electrode and the liquid crystal layer, and the second alignment layer is located between the second privacy electrode and the liquid crystal layer.
[0011] According to another embodiment of the present invention, a first alignment layer covers some of the first dummy electrode blocks in the normal direction of the first substrate.
[0012] According to another embodiment of the present invention, the light-transmitting conductive layer further comprises a second dummy electrode block, the second dummy electrode block being electrically insulated from the first privacy electrode, and the second dummy electrode block being covered by a frame adhesive in the normal direction of the first substrate.
[0013] According to another embodiment of the present invention, the first substrate structure further includes a first alignment layer, the first alignment layer being located between the first privacy electrode and the liquid crystal layer, and the first alignment layer covering the second dummy electrode block in the normal direction of the first substrate.
[0014] The beneficial effects of the present invention are at least that it can increase the flatness of the substrate structure, which is beneficial to subsequent processes (such as alignment treatment and curing of frame adhesive, etc.), thereby improving the uniformity of light transmission, while avoiding excessive coupling capacitance between the dummy electrode block and other components, which would affect the performance of the privacy panel. Attached Figure Description
[0015] To gain a more complete understanding of the embodiments and their advantages, reference is now made to the following description taken in conjunction with the accompanying drawings, wherein:
[0016] Figure 1 This is a cross-sectional schematic diagram of the privacy panel according to the first embodiment of the present invention;
[0017] Figure 2 for Figure 1 A schematic diagram of the layout of the first light-transmitting conductive layer in a privacy panel;
[0018] Figures 3A to 3D respectively along Figure 2 Cross-sectional view of each cutting line in the middle;
[0019] Figure 4 This is a schematic diagram of the layout of the first light-transmitting conductive layer in the privacy panel of the second embodiment of the present invention;
[0020] Figure 5 This is a schematic diagram of the layout of the first light-transmitting conductive layer in the privacy panel of the third embodiment of the present invention;
[0021] Figure 6 For along Figure 5 Cross-sectional view of each cutting line. Detailed Implementation
[0022] The embodiments disclosed herein are discussed in detail below. However, it will be understood that the embodiments provide many applicable concepts that can be implemented in a wide variety of specific situations. The discussed and disclosed embodiments are for illustrative purposes only and are not intended to limit the scope of this disclosure.
[0023] The language used herein is for the purpose of describing particular embodiments only and is not intended to limit the claims. Unless otherwise limited, the singular forms of "a" or "the" may also be used to denote the plural forms.
[0024] It is understood that although terms such as "first," "second," etc., may be used in this document to describe various features, these terms should not limit these features. These terms are only used to distinguish one feature from another.
[0025] The use of spatial relativity is intended to describe the different orientations of a component during use or operation, and is not limited to the orientation shown in the accompanying drawings. Components may also be oriented in other ways (rotated 90 degrees or in other directions), and the spatial relativity descriptions used herein can be interpreted in the same way.
[0026] For the sake of simplicity and clarity, element symbols and / or letters may be repeated in various embodiments herein, but this does not imply a causal relationship between the various embodiments and / or configurations discussed. Furthermore, for the sake of simplicity and clarity in illustrating technical features, elements in the accompanying drawings are not drawn to scale, and the dimensions of each element may be arbitrarily increased or decreased.
[0027] Figure 1 This is a cross-sectional schematic diagram of the privacy panel 100 according to a first embodiment of the present invention. The privacy panel 100 can be disposed above or below the display panel, and the privacy panel 100 can switch between a sharing mode and a privacy mode, wherein the viewing angle in the privacy mode is smaller than that in the sharing mode. Therefore, in the sharing mode, a viewer at a specific viewing angle (e.g., a viewer located to the side of the display panel) can view the image of the display panel and / or identify the information within the image, but in the privacy mode, the privacy panel 100 makes it difficult for the viewer at the aforementioned specific viewing angle to view the image of the display panel and / or identify the information within the image.
[0028] like Figure 1 As shown, the privacy panel 100 includes a first substrate structure 110, a second substrate structure 120, a liquid crystal layer 130, and a sealant 140. The first substrate structure 110 and the second substrate structure 120 are arranged facing each other. The liquid crystal layer 130 is disposed between the first substrate structure 110 and the second substrate structure 120, and the sealant 140 is disposed between the first substrate structure 110 and the second substrate structure 120 and surrounds the liquid crystal layer 130. Therefore, the first substrate structure 110, the second substrate structure 120, the liquid crystal layer 130, and the sealant 140 form a liquid crystal cell. In some embodiments, the privacy panel 100 is a flexible privacy panel, and both the first substrate structure 110 and the second substrate structure 120 are flexible substrate structures.
[0029] The first substrate structure 110 includes a first substrate 111, a first insulating layer 112, a first light-transmitting conductive layer 113, and a first alignment layer 114. The first insulating layer 112, the first light-transmitting conductive layer 113, and the first alignment layer 114 are located on the surface of the first substrate 111 facing the second substrate structure 120, and are sequentially disposed on the first substrate 111 in a direction toward the second substrate structure 120 (i.e., direction Z; the same as the normal direction of the first substrate 111), wherein the first alignment layer 114 is disposed between the first light-transmitting conductive layer 113 and the liquid crystal layer 130. The second substrate structure 120 includes a second substrate 121, a second insulating layer 122, a second light-transmitting conductive layer 123, and a second alignment layer 124. The second insulating layer 122, the second light-transmitting conductive layer 123, and the second alignment layer 124 are located on the surface of the second substrate 121 facing the first substrate structure 110, and are sequentially disposed on the second substrate 121 in a direction toward the first substrate structure 110 (i.e., in a direction opposite to direction Z), wherein the second alignment layer 124 is disposed between the second light-transmitting conductive layer 123 and the liquid crystal layer 130.
[0030] The first substrate structure 110 and the second substrate structure 120 can be flexible substrate structures or rigid substrate structures. Specifically, the first substrate 111 and the second substrate 121 can be flexible substrates, glass substrates, or other suitable substrates, such as substrates with high light transmittance, but are not limited thereto. Taking a flexible substrate as an example, the materials of the first substrate 111 and the second substrate 121 may include, for example, polyimide (PI), triacetyl cellulose (TAC), polyethylene terephthalate (PET), polycarbonate (PC), polymethyl methacrylate (PMMA), combinations thereof, and / or other suitable materials.
[0031] The materials of the first insulating layer 112 and the second insulating layer 122 may include, for example, silicon nitride, silicon oxide, silicon oxide nitride, combinations thereof, and / or other suitable dielectrics. In some examples, the material of the first insulating layer 112 is the same as the material of the second insulating layer 122 (e.g., both are silicon oxide or both are silicon nitride).
[0032] The privacy panel 100 has an active area 100A and a peripheral area 100B. A first transparent conductive layer 113 includes a first privacy electrode 113A and a connecting electrode 113B, wherein at least a portion of the first privacy electrode 113A is located in the active area 100A, and the connecting electrode 113B is located in the peripheral area 100B. A second transparent conductive layer 123 includes a second privacy electrode 123A, with a portion and the remainder of the second privacy electrode 123A located in the active area 100A and the peripheral area 100B, respectively. The first privacy electrode 113A of the first transparent conductive layer 113 and the second privacy electrode 123A of the second transparent conductive layer 123 can serve as electrodes driving the liquid crystal layer 130. By controlling the voltage difference between the first privacy electrode 113A and the second privacy electrode 123A, the electric field between them can be adjusted, causing the liquid crystal molecules in the liquid crystal layer 130 to rotate accordingly. This reduces the amount of light emitted at a specific angle, causing the privacy panel 100 to enter a privacy mode. For example, when at least one of the first privacy electrode 113A and the second privacy electrode 123A is floating, or when the voltage difference between them is 0, the privacy panel 100 enters a sharing mode; and when the absolute value of the voltage difference between them is greater than a specific value, the privacy panel 100 enters a privacy mode. The first transparent conductive layer 113 and the second transparent conductive layer 123 may comprise a transparent conductive material, such as indium tin oxide (ITO), indium zinc oxide (IZO), antimony tin oxide (ATO), fluorine tin oxide (FTO), tin oxide, zinc oxide, graphene, or other suitable transparent conductive materials, but are not limited thereto. In some embodiments, at least one of the first transparent conductive layer 113 and the second transparent conductive layer 123 may comprise a metal mesh.
[0033] Both the first alignment layer 114 and the second alignment layer 124 have predetermined alignment directions, such that the liquid crystal molecules in the liquid crystal layer 130 are arranged at a predetermined tilt angle. Depending on the type of liquid crystal molecules and the driving method, the alignment directions of the first alignment layer 114 and the second alignment layer 124 can be parallel or non-parallel, or both the first alignment layer 114 and the second alignment layer 124 can have multiple alignment directions, but are not limited thereto. The materials of the first alignment layer 114 and the second alignment layer 124 can include polyimide and / or other suitable materials. The liquid crystal molecules in the liquid crystal layer 130 can be, for example, nematic liquid crystal molecules, smectic liquid crystal molecules, cholesteric liquid crystal molecules, or other suitable liquid crystal molecules.
[0034] The sealant 140 is located in the peripheral region 100B and is used to bond the first substrate structure 110 and the second substrate structure 120, and the liquid crystal layer 130 is located in the space formed by the first substrate structure 110, the second substrate structure 120, and the sealant 140. Figure 1 As shown, the connecting electrode 113B of the first transparent conductive layer 113, the sealant 140, and the second privacy electrode 123A of the second transparent conductive layer 123 overlap each other in the Z direction. The sealant 140 may be a conductive sealant containing conductive particles (not shown). In this way, voltage signals can be transmitted to the second privacy electrode 123A of the second substrate structure 120 via the connecting electrode 113B of the first substrate structure 110 and the conductive particles in the sealant 140. In other embodiments, the sealant 140 may be a non-conductive sealant, and the second privacy electrode 123A of the second transparent conductive layer 123 may be electrically connected to the second connecting pad 113D of the first substrate structure 110 via conductive adhesive (not shown), so that voltage signals can be transmitted to the second privacy electrode 123A of the second transparent conductive layer 123 via the second connecting pad 113D and the conductive adhesive of the first substrate structure 110.
[0035] In some examples, the privacy panel 100 may also include a spacer (not shown) disposed between the first substrate 111 and the second substrate 121 and within the liquid crystal layer 130, for controlling the thickness and uniformity of the privacy panel 100. The spacer may be made of glass fiber, photoresist (e.g., photosensitive resin), and / or other suitable materials, but is not limited thereto. The spacer may have a columnar shape, a spherical shape, a combination of the above, and / or other suitable shapes.
[0036] In some examples, such as Figure 1As shown, the privacy panel 100 further includes a light-shielding layer 125 disposed in the peripheral area 100B of the privacy panel 100 to prevent light transmission in the peripheral area 100B of the privacy panel 100. The material of the light-shielding layer 125 may include, for example, black resin, chromium, chromium oxide, or other opaque materials. In this embodiment, the light-shielding layer 125 is disposed in the second substrate structure 120, but is not limited thereto. Furthermore, in some embodiments, the privacy panel 100 may not include the light-shielding layer 125 (e.g., other elements of the privacy display device are used to shield the peripheral area 100B of the privacy panel 100).
[0037] Figure 2 This is a schematic diagram showing the layout of the first light-transmitting conductive layer 113 in the privacy panel 100. (See diagram below.) Figure 2 As shown, the first transparent conductive layer 113 is located on the first substrate 111 and includes a first privacy electrode 113A, a connecting electrode 113B, a first connecting pad 113C, a second connecting pad 113D, a first connecting line 113E, and a first dummy electrode block 113F, wherein at least a portion of the first privacy electrode 113A is located in the active region 100A. Figure 2 Taking a portion of the first privacy electrode 113A and the remainder of it located in the active area 100A and the peripheral area 100B respectively as an example, the connecting electrode 113B, the first connecting pad 113C, the second connecting pad 113D, the first connecting line 113E, and the first dummy electrode block 113F are all located in the peripheral area 100B. The first privacy electrode 113A is connected to the first connecting pad 113C via the first connecting line 113E, and the connecting electrode 113B surrounds the first privacy electrode 113A and is connected to the second connecting pad 113D. The first privacy electrode 113A, the connecting electrode 113B, and the first dummy electrode block 113F are electrically insulated from each other.
[0038] The first dummy electrode block 113F is not covered by the second substrate structure 120 in the normal direction of the first substrate 111. For example... Figure 2 As shown, the first dummy electrode blocks 113F, located to the right of the first connecting pad 113C and to the left of the second connecting pad 113D, are both situated between the boundary 111E of the first substrate 111 and the boundary 121E of the second substrate 121 (i.e., not covered by the second substrate structure 120 in the normal direction of the first substrate 111). The first dummy electrode blocks 113F between the first connecting pad 113C and the second connecting pad 113D may be wholly or partially covered by the second substrate structure 120 in the normal direction of the first substrate 111, or may not be covered by the second substrate structure 120 at all; however, the present invention is not limited thereto. Furthermore, as... Figure 2As shown, the first dummy electrode block 113F located to the right of the first connecting pad 113C and to the left of the second connecting pad 113D is staggered along the X direction and aligned along the Y direction, while the first dummy electrode block 113F located between the first connecting pad 113C and the second connecting pad 113D is aligned along the X direction, wherein the X, Y and Z directions are perpendicular to each other.
[0039] The layout area of the first dummy electrode block 113F can be 80% to 90% of the area of the peripheral region 100B that is not covered by the second substrate structure 120 in the normal direction of the first substrate 111 (i.e., the area between the boundary 111E of the first substrate 111 and the boundary 121E of the second substrate 121), so as to increase the flatness of the first substrate structure 110, which is beneficial to subsequent processes (such as the alignment treatment of the first alignment layer 114 and the curing of the frame adhesive 140, etc.), thereby improving the light transmission uniformity of the active region 100A, while avoiding the generation of excessive coupling capacitance between the first dummy electrode block 113F and other components in the first light-transmitting conductive layer 113, which would affect the performance of the privacy panel 100.
[0040] Figure 3A For along Figure 2 A cross-sectional view of the cutting line A-A' in the middle. (See diagram below.) Figure 2 and Figure 3A As shown, in the privacy panel 100, the first connecting pad 113C is not covered by the second substrate structure 120 in the normal direction of the first substrate 111, so that a circuit board or chip (not shown) can be directly bonded or indirectly bonded through other electronic components. The circuit board or chip (not shown) can transmit a first voltage signal S1 to the first connecting pad 113C and then to the first privacy electrode 113A via the first connecting line 113E. Directly above the first connecting line 113E, the second privacy electrode 123A does not overlap with the light-shielding layer 125 and the frame adhesive 140. In this way, the first voltage signal S1 will not be transmitted to the second privacy electrode 123A via conductive particles or other components in the frame adhesive 140.
[0041] Figure 3B For along Figure 2 A cross-sectional view of the B-B' cutting line. (See diagram below.) Figure 2 and Figure 3BAs shown, in the privacy panel 100, the second connecting pad 113D is not covered by the second substrate structure 120 in the normal direction of the first substrate 111, so that the circuit board or chip (not shown) can be directly bonded or indirectly bonded through other electronic components. The adhesive 140 overlaps with the connecting electrode 113B and the second privacy electrode 123A in the normal direction of the first substrate 111, with its two ends connected to the connecting electrode 113B and the second privacy electrode 123A, respectively. That is, the connecting electrode 113B is located directly below the adhesive 140 and is electrically connected to the second privacy electrode 123A via the adhesive 140. In this way, the circuit board or chip (not shown) can transmit the second voltage signal S2 to the second connecting pad 113D, and then to the second privacy electrode 123A via the conductive particles in the connecting electrode 113B and the adhesive 140.
[0042] like Figure 3A and Figure 3B As shown, the first voltage signal S1 is transmitted to the first privacy electrode 113A via the first connecting pad 113C and the first connecting line 113E, while the second voltage signal S2 is transmitted to the second privacy electrode 123A via the second connecting pad 113D, the connecting electrode 113B and the conductive particles in the frame adhesive 140, so as to form an electric field between the first privacy electrode 113A and the second privacy electrode 123A, causing the liquid crystal molecules in the liquid crystal layer 130 to rotate under the action of the electric field.
[0043] Figure 3C and Figure 3D respectively along Figure 2 Cross-sectional views of the C-C' and D-D' cutting lines. (See diagram.) Figure 2 and Figure 3C As shown, in the privacy panel 100, the first dummy electrode block 113F to the right of the first connecting pad 113C is located outside the frame adhesive 140 and is not covered by the second substrate structure 120 in the normal direction of the first substrate 111. Furthermore, as... Figure 2 and Figure 3D As shown, the first dummy electrode block 113F between the first connecting pad 113C and the second connecting pad 113D is located outside and / or below the frame adhesive 140, wherein a portion of the first dummy electrode block 113F is wholly or partially covered by the frame adhesive 140, while another portion of the first dummy electrode block 113F is not covered by the frame adhesive 140, and the portion of the second privacy electrode 123A between the first connecting pad 113C and the second connecting pad 113D does not overlap with the light-shielding layer 125 and the frame adhesive 140, so as to avoid the second privacy electrode 123A being electrically connected to the first dummy electrode block 113F via conductive particles in the frame adhesive 140. In some embodiments, such as Figure 3D As shown, the first alignment layer 114 covers some of the first dummy electrode blocks 113F in the normal direction of the first substrate.
[0044] Figure 4 This is a schematic diagram showing the layout of the first light-transmitting conductive layer 113 in the privacy panel 100' of the second embodiment of the present invention. The difference between the privacy panel 100' and the privacy panel 100 of the first embodiment is that, in the privacy panel 100', the first light-transmitting conductive layer 113 includes a first privacy electrode 113A, a connecting electrode 113B, a first connecting pad 113C1, a second connecting pad 113D1, a third connecting pad 113C2, a fourth connecting pad 113D2, a first connecting line 113E1, a second connecting line 113E2, and a first dummy electrode block 113F, wherein at least a portion of the first privacy electrode 113A is located in the active area 100A. Figure 2 (Taking a portion of the first privacy electrode 113A and the rest of it as an example, located in the active area 100A and the peripheral area 100B respectively, and the connecting electrode 113B, the first connecting pad 113C1, the second connecting pad 113D1, the third connecting pad 113C2, the fourth connecting pad 113D2, the first connecting line 113E1, the second connecting line 113E2 and the first dummy electrode block 113F are all located in the peripheral area 100B.)
[0045] In the privacy panel 100', the first connecting pad 113C1, the second connecting pad 113D1, the third connecting pad 113C2, and the fourth connecting pad 113D2 are not covered by the second substrate structure 120 in the normal direction of the first substrate 111, so that one or more circuit boards or chips (not shown) can be directly bonded or indirectly bonded through other electronic components (for example, one circuit board bonds the first connecting pad 113C1 and the second connecting pad 113D1, while another circuit board bonds the third connecting pad 113C2 and the fourth connecting pad 113D2). The first privacy electrode 113A is connected to the first connecting pad 113C1 and the third connecting pad 113C2 through the first connecting line 113E1 and the second connecting line 113E2, respectively. The connecting electrode 113B surrounds the first privacy electrode 113A, and the second connecting pad 113D1 and the fourth connecting pad 113D2 are respectively connected to the two ends of the connecting electrode 113B. The first privacy electrode 113A, the connecting electrode 113B, and the first dummy electrode block 113F are electrically insulated from each other.
[0046] The first dummy electrode block 113F is not covered by the second substrate structure 120 in the normal direction of the first substrate 111. For example... Figure 4As shown, the first dummy electrode blocks 113F between the first connecting pad 113C1 and the third connecting pad 113C2, to the left of the second connecting pad 113D1, and to the right of the fourth connecting pad 113D2 are all located between the boundary 111E of the first substrate 111 and the boundary 121E of the second substrate 121 (i.e., not covered by the second substrate structure 120 in the normal direction of the first substrate 111). The first dummy electrode blocks 113F between the first connecting pad 113C1 and the second connecting pad 113D1, and between the third connecting pad 113C2 and the fourth connecting pad 113D2, may be wholly or partially covered by the second substrate structure 120 in the normal direction of the first substrate 111, or may not be covered by the second substrate structure 120, but the present invention is not limited thereto. Furthermore, as... Figure 4 As shown, the first dummy electrode blocks 113F located between the first connecting pad 113C1 and the third connecting pad 113C2, to the left of the second connecting pad 113D1, and to the right of the fourth connecting pad 113D2 are staggered along the X direction and aligned along the Y direction. The first dummy electrode blocks 113F located between the first connecting pad 113C1 and the second connecting pad 113D1, and between the third connecting pad 113C2 and the fourth connecting pad 113D2, are aligned along the X direction. The remaining components of the privacy panel 100' are the same as the corresponding components of the privacy panel 100 in the first embodiment; therefore, their related descriptions are provided in the description of the first embodiment and will not be repeated here.
[0047] Figure 5This is a schematic diagram showing the layout of the first light-transmitting conductive layer 113 in the privacy panel 100” of the third embodiment of the present invention. The difference between the privacy panel 100” and the privacy panel 100’ of the second embodiment is that, in the privacy panel 100”, the first light-transmitting conductive layer 113 further includes a second dummy electrode block 113G, which is located in the peripheral area 100B and between the first connecting pad 113C1 and the third connecting pad 113C2, and is covered by the second substrate structure 120 in the normal direction of the first substrate 111. The second dummy electrode block 113G is electrically insulated from the first privacy electrode 113A and the first dummy electrode block 113F. The total layout area of the first dummy electrode block 113F can be... The peripheral area 100B comprises 80% to 90% of the area of the region not covered by the second substrate structure 120 in the normal direction of the first substrate 111 (i.e., the region between the boundary 111E of the first substrate 111 and the boundary 121E of the second substrate 121), to increase the flatness of the first substrate structure 110, thereby facilitating subsequent processes (such as alignment treatment of the first alignment layer 114 and curing of the frame adhesive 140), thus improving the light transmission uniformity of the active area 100A, while avoiding excessive coupling capacitance between the first dummy electrode block 113F, the second dummy electrode block 113G and other components in the first light-transmitting conductive layer 113, which would affect the performance of the privacy panel 100". In addition, the provision of the second dummy electrode block 113G also helps to increase the flatness of the first substrate structure 110 and thus facilitates subsequent processes. The remaining components of the privacy panel 100” are the same as the corresponding components of the privacy panel 100' in the second embodiment. Therefore, please refer to the descriptions of the first and second embodiments for related descriptions, and they will not be repeated here.
[0048] Figure 6 For along Figure 5 A cross-sectional view of the E-E' cutting line. (See diagram.) Figure 5 and Figure 6 As shown, in the privacy panel 100", the second dummy electrode block 113G is covered by the second substrate structure 120 in the normal direction of the first substrate 111, and the first alignment layer 114 covers the second dummy electrode block 113G in the normal direction of the first substrate 111. In addition, the portion of the second privacy electrode 123A directly above the second dummy electrode block 113G does not overlap with the light-shielding layer 125 and the frame adhesive 140, so as to avoid the second privacy electrode 123A being electrically connected to the second dummy electrode block 113G via conductive particles in the frame adhesive 140.
[0049] It should be noted that the first light-transmitting conductive layer 113 in the first to third embodiments of the present invention is not... Figure 2 , Figure 4 and Figure 5The plan view shown is for illustrative purposes only. For example, in other embodiments, the first dummy electrode block 113F may be arranged row-by-row and column-by-column (i.e., aligned along directions X and Y). Furthermore, the planar shape of the privacy panels 100, 100', 100" may be rectangular or non-rectangular, and / or the first dummy electrode block 113F may have any planar shape, not limited to... Figure 2 , Figure 4 and Figure 5 The rectangle shown.
[0050] Although the present invention has been disclosed above by way of embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.
Claims
1. A privacy panel, characterized in that, Include: A first substrate structure includes a first substrate and a light-transmitting conductive layer, wherein the light-transmitting conductive layer has a first privacy electrode and a plurality of first dummy electrode blocks. A second substrate structure is disposed opposite to the first substrate structure, and the second substrate structure includes a second substrate and a second privacy electrode. A liquid crystal layer is located between the first privacy electrode and the second privacy electrode; as well as A frame adhesive is located between the first substrate structure and the second substrate structure and surrounds the liquid crystal layer; The first substrate has a peripheral region located outside the frame adhesive, and the plurality of first dummy electrode blocks are located in the peripheral region.
2. The privacy panel as described in claim 1, characterized in that, The layout area of the plurality of first dummy electrode blocks is 80% to 90% of the area of the peripheral region that is not covered by the second substrate structure in the normal direction of the first substrate.
3. The privacy panel as described in claim 1, characterized in that, The light-transmitting conductive layer further includes a connecting electrode, a first connecting pad, and a second connecting pad. The connecting electrode is located directly below the frame adhesive and is electrically connected to the second privacy electrode via the frame adhesive. The first connecting pad and the second connecting pad are respectively connected to the first privacy electrode and the connecting electrode and are both located in the peripheral area.
4. The privacy panel as described in claim 3, characterized in that, Some of the plurality of first dummy electrode blocks are located between the first connecting pad and the second connecting pad.
5. The privacy panel as described in claim 3, characterized in that, The light-transmitting conductive layer further includes a third connecting pad and a fourth connecting pad, both of which are located in the peripheral area. The second connecting pad and the fourth connecting pad are respectively connected to the two ends of the connecting electrode, and the third connecting pad is connected to the first privacy electrode.
6. The privacy panel as described in claim 5, characterized in that, Some of the plurality of first dummy electrode blocks are located between the first connecting pad and the second connecting pad, and between the third connecting pad and the fourth connecting pad.
7. The privacy panel as described in claim 1, characterized in that, The first substrate structure and the second substrate structure further include a first alignment layer and a second alignment layer, respectively, wherein the first alignment layer is located between the first privacy electrode and the liquid crystal layer, and the second alignment layer is located between the second privacy electrode and the liquid crystal layer.
8. The privacy panel as described in claim 7, characterized in that, The first alignment layer covers some of the plurality of first dummy electrode blocks in the normal direction of the first substrate.
9. The privacy panel as described in claim 1, characterized in that, The light-transmitting conductive layer also has a second dummy electrode block, which is electrically insulated from the first privacy electrode, and the second dummy electrode block is covered by the frame adhesive in the normal direction of the first substrate.
10. The privacy panel as claimed in claim 9, characterized in that, The first substrate structure further includes a first alignment layer, which is located between the first privacy electrode and the liquid crystal layer, and the first alignment layer covers the second dummy electrode block in the normal direction of the first substrate.