Display device

Abstract

The invention discloses a display device which is provided with a first display area and a second display area and comprises a first substrate, a second substrate, a display medium layer, a light-emitting element, a transparent electrode layer and a pixel electrode. The second substrate overlaps the first substrate. The display medium layer is located between the first substrate and the second substrate. The light-emitting element is located in the first display area and located between the first substrate and the display medium layer. The transparent electrode layer is located in the first display area, is located between the second substrate and the display medium layer, and comprises a plurality of transparent electrode patterns which are arranged at intervals. The pixel electrode is located in the second display area and located between the first substrate and the display medium layer or between the second substrate and the display medium layer.

Description

Technical Field

[0001] The present invention relates to an optoelectronic device, and particularly to a display device. Background Art

[0002] Currently, displays with two-dimensional / three-dimensional (2D / 3D) image switching capabilities are all formed by stacking another liquid crystal cell (LC cell) responsible for 2D / 3D switching on a liquid crystal panel for displaying 2D images, making the display very thick and heavy. In addition, for some images that only require 2D display, equipping the entire surface with an LC cell responsible for 2D / 3D switching will also cause a reduction in the resolution of the 2D display image. Summary of the Invention

[0003] The present invention provides a display device with reduced thickness and weight and improved 2D display resolution.

[0004] An embodiment of the present invention provides a display device having a first display area and a second display area, and including a first substrate, a second substrate, a display medium layer, a light-emitting element, a transparent electrode layer, and a pixel electrode. The second substrate overlaps the first substrate. The display medium layer is located between the first substrate and the second substrate. The light-emitting element is located in the first display area and between the first substrate and the display medium layer. The transparent electrode layer is located in the first display area and between the second substrate and the display medium layer, and includes a plurality of transparent electrode patterns arranged at intervals. The pixel electrode is located in the second display area and between the first substrate and the display medium layer or between the second substrate and the display medium layer.

[0005] In an embodiment of the present invention, there are a plurality of first slits between the plurality of transparent electrode patterns of the transparent electrode layer.

[0006] In an embodiment of the present invention, the included angle between the extending direction of the plurality of transparent electrode patterns and the long side direction of the display device is between 30° and 60°.

[0007] In an embodiment of the present invention, the pixel electrode has a plurality of second slits.

[0008] In an embodiment of the present invention, the display device further includes a planarizing layer located in the first display area and covering the light-emitting element.

[0009] In an embodiment of the present invention, the display device further includes a first transparent surface electrode located on the planarizing layer and on the side of the display medium layer opposite to the transparent electrode layer.

[0010] In an embodiment of the present invention, the display device further includes a grating located on the first transparent surface electrode and on the same side of the display medium layer as the light-emitting element.

[0011] In an embodiment of the present invention, the display device further includes a second transparent surface electrode, which is located in the second display area and on the side of the display medium layer opposite to the pixel electrode.

[0012] In an embodiment of the present invention, the display device further includes a first sealant, which is located at the edge of the display device.

[0013] In an embodiment of the present invention, the number of light-emitting elements is multiple, and the display device further includes a second sealant, which covers the light-emitting elements adjacent to the second display area among the multiple light-emitting elements.

[0014] In an embodiment of the present invention, the display medium layer includes first-type display medium molecules located in the first display area and second-type display medium molecules located in the second display area.

[0015] In an embodiment of the present invention, the birefringence of the first-type display medium molecules is greater than that of the second-type display medium molecules.

[0016] In an embodiment of the present invention, the voltage of the light-emitting elements covered by the second sealant is different from the voltage of the light-emitting elements overlapping with the transparent electrode layer.

[0017] In an embodiment of the present invention, the display device further includes a first transistor, which is located in the first display area and electrically connected to the light-emitting elements.

[0018] In an embodiment of the present invention, the display device further includes a second transistor, which is located in the second display area and electrically connected to the pixel electrode.

[0019] To make the above features and advantages of the present invention more obvious and understandable, specific embodiments are given below and described in detail in conjunction with the accompanying drawings as follows. Description of the Drawings

[0020] Figure 1A is a top view schematic diagram of a display device according to an embodiment of the present invention;

[0021] Figures 1B to 1C is along Figure 1A section line A-A' of the sectional schematic diagram;

[0022] Figure 2 is a sectional schematic diagram of a display device according to an embodiment of the present invention;

[0023] Figure 3A is a top view schematic diagram of a display device according to an embodiment of the present invention;

[0024] Figure 3B is along Figure 3A section line A-A' of the sectional schematic diagram.

[0025] Symbol Explanation:

[0026] 10, 20, 30: Display device

[0027] 105: Sealant

[0028] 110, 120: Substrate

[0029] 130: Display medium layer

[0030] 140: Light-emitting element

[0031] 141, 142: Electrodes

[0032] 143, 144: Conductive members

[0033] 146, 148: Conductive wires

[0034] 150: Transparent electrode layer

[0035] 152: Transparent electrode pattern

[0036] 160: Pixel electrode

[0037] 170: Transparent surface electrode

[0038] 175: Transparent electrode

[0039] 177: Conductive wire

[0040] 180: Backlight module

[0041] 210: Flat layer

[0042] 210S: Side wall

[0043] 210T: Upper surface

[0044] 220: Transparent surface electrode

[0045] 230: Grating

[0046] 305: Sealant

[0047] 310, 320: Display medium layer

[0048] A - A’: Section line

[0049] A1, A2, A3: Display area

[0050] C1: Channel

[0051] d: Spacing

[0052] D1, D2: Drain

[0053] DM, DM1, DM2: Display medium molecules

[0054] Ds: Extension direction

[0055] Dx: Long side direction

[0056] Dy: Short side direction

[0057] G1: Gate

[0058] I1, I2, I3: Insulating layer

[0059] PS: Signal source

[0060] PXc, PXd: Sub-pixels

[0061] S1: Source

[0062] ST1, ST2: Slits

[0063] T1, T2: Transistors

[0064] θ: Angle between Detailed implementation mode

[0065] In the drawings, for clarity, the thicknesses of layers, films, panels, regions, etc. are exaggerated. Throughout the specification, like reference numerals denote like elements. It should be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element, or intervening elements may also be present. Conversely, when an element is referred to as being "directly on" or "directly connected to" another element, no intervening elements are present. As used herein, "connected" may refer to physical and / or electrical connection. Furthermore, "electrically connected" or "coupled" may mean that there are other elements between two elements.

[0066] It should be understood that although the terms "first", "second", "third", etc. may be used herein to describe various elements, components, regions, layers, and / or portions, these elements, components, regions, layers, and / or portions should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer, or portion from another element, component, region, layer, or portion. Thus, the first "element", "component", "region", "layer", or "portion" discussed below may be referred to as a second element, component, region, layer, or portion without departing from the teachings herein.

[0067] The terms used herein are for the purpose of describing particular embodiments only and are not limiting. As used herein, unless the context clearly dictates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms, including "at least one" or indicating "and / or". As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. It should also be understood that when used in this specification, the terms "comprises" and / or "comprising" specify the presence of the stated features, regions, wholes, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, regions, wholes, steps, operations, elements, components and / or combinations thereof.

[0068] In addition, relative terms such as "lower" or "bottom" and "upper" or "top" may be used herein to describe the relationship of one element to another, as shown in the figures. It should be understood that relative terms are intended to include different orientations of the device in addition to the orientation shown in the figures. For example, if the device in one figure is flipped, an element described as on the "lower" side of other elements will be oriented on the "upper" side of the other elements. Thus, the exemplary term "lower" can include orientations of both "lower" and "upper", depending on the particular orientation of the figure. Similarly, if the device in one figure is flipped, an element described as "below" or "beneath" other elements will be oriented as "above" the other elements. Thus, the exemplary term "lower" or "beneath" can include orientations of both above and below.

[0069] Taking into account the particular amounts of the measurements discussed and the errors associated with the measurements (i.e., the limitations of the measurement system), "about", "approximately" or "substantially" as used herein includes the stated value and the average within an acceptable deviation range of the particular value determined by a person of ordinary skill in the art. For example, "about" can mean within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, ±5%. Furthermore, "about", "approximately" or "substantially" as used herein may be selected with a more acceptable deviation range or standard deviation depending on optical properties, etching properties or other properties, rather than using one standard deviation to apply to all properties.

[0070] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by a person of ordinary skill in the art to which this invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and this invention, and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0071] The exemplary embodiments are described with reference to cross-sectional views that are schematic illustrations of idealized embodiments. Accordingly, shape variations as a result of, for example, manufacturing techniques and / or tolerances are to be expected. Thus, the embodiments described herein are not to be construed as limited to the particular shapes of regions as shown herein, but include shape deviations resulting from, for example, manufacturing. For example, regions shown or described as flat may typically have rough and / or non-linear features. Additionally, the sharp angles shown may be rounded. Thus, the regions shown in the figures are schematic in nature, and their shapes are not intended to depict the exact shape of the regions and are not intended to limit the scope of the claims.

[0072] Figure 1A is a top schematic view of a display device 10 according to an embodiment of the present invention. Figures 1B to 1C is along Figure 1A section line A-A' of the cross-sectional schematic view. For the sake of simplicity of the expression of the drawings, Figure 1A schematically shows a display area A1, a display area A2, and a transparent electrode layer 150, and other components are omitted.

[0073] Please refer to Figures 1A to 1B , the display device 10 has a display area A1 and a display area A2, and includes a substrate 110, a substrate 120, a display medium layer 130, a light-emitting element 140, a transparent electrode layer 150, and a pixel electrode 160. The substrate 120 overlaps the substrate 110. The display medium layer 130 is located between the substrate 110 and the substrate 120. The light-emitting element 140 is located in the display area A1 and is located between the substrate 110 and the display medium layer 130. The transparent electrode layer 150 is located in the display area A1, is located between the substrate 120 and the display medium layer 130, and includes a plurality of transparent electrode patterns 152 arranged at intervals. The pixel electrode 160 is located in the display area A2 and is located between the substrate 110 and the display medium layer 130 or between the substrate 120 and the display medium layer 130.

[0074] In the display device 10 according to an embodiment of the present invention, by providing the light-emitting element 140 and the transparent electrode layer 150 responsible for 2D / 3D switching in the area where 3D display is required, the thickness and weight of the display device 10 can be reduced, and at the same time, the resolution of 2D display can be improved.

[0075] Hereinafter, in conjunction with the drawings, the implementation manners of the respective elements of the display device 10 will be further described, but the present invention is not limited thereto.

[0076] Please refer to Figure 1A, the display device 10 may have adjacent display areas A1 and A2. The display area A2 may be disposed along a side of the display area A1. For example, the display area A1 has a rectangular contour, and the display area A2 may be disposed along three sides of the display area A1 such that the display area A2 surrounds the display area A1, but is not limited thereto. In some embodiments, the display area A2 may be disposed along two sides of the display area A1. In other embodiments, the display area A2 may be disposed along four sides of the display area A1 such that the display area A2 surrounds the display area A1. In some embodiments, the display area A1 is a 2D / 3D display area, that is, the display area A1 is capable of displaying 2D and 3D images. For example, at some time points, the display area A1 is capable of displaying 2D images, and at other time points, the display area A1 is capable of displaying 3D images. Or, during some periods, the display area A1 is capable of displaying 2D images, and during other periods, the display area A1 is capable of displaying 3D images.

[0077] The display area A2 may only display 2D images. In some embodiments, the 2D images displayed in the display area A2 are presented by a liquid crystal display method. In some embodiments, the 2D images displayed by the display device 10 are presented by a combination of self-luminous elements in the display area A1 and liquid crystal displays in the display area A2. Therefore, the resolution of the 2D display of the display device 10 is not affected by the structure of the display area A1 providing 3D display, and can still maintain a resolution similar to that of, for example, a 2D liquid crystal display device or a 2D light-emitting diode display device.

[0078] Please refer to Figure 1B , the substrate 110 of the display device 10 may be a transparent substrate or an opaque substrate, and its material may be quartz, glass, polymer (for example, polyimide (PI)) or other suitable materials. Other elements required for the display device 10, such as light-emitting elements, switching elements, driving elements, etc., may be carried on the substrate 110.

[0079] The substrate 120 of the display device 10 may be disposed face to face with the substrate 110, and the shortest distance between each site on the substrate 120 and the substrate 110 is substantially the same. That is, a substantially uniform spacing may be maintained between the substrate 120 and the substrate 110. Generally, the substrate 120 may be a transparent substrate, and its material is, for example, glass, polymer or other suitable materials. The substrate 110 and the substrate 120 may have the same or different materials. In some embodiments, the substrate 110 and / or the substrate 120 may be flexible substrates.

[0080] The display medium layer 130 is located in the space between the substrate 120 and the substrate 110. For example, the display device 10 further includes a sealant 105. The sealant 105 can seal the space between the substrate 110 and the substrate 120 along the edges of the substrate 110 and the substrate 120, so that the display medium layer 130 is surrounded in the space sealed by the substrate 110, 120 and the sealant 105, and the display medium layer 130 can be located in the display areas A1 and A2. In some embodiments, the material of the sealant 105 includes at least one of polyurethane acrylate (PUA), epoxy acrylate (Epoxy), and silicone resin (Silicone), but is not limited thereto.

[0081] The display medium molecules DM of the display medium layer 130, for example, include positive liquid crystal molecules or negative liquid crystal molecules. In some embodiments, the display medium molecules DM may include vertically aligned (VA) liquid crystal molecules or optically compensated bend (OCB) liquid crystal molecules, so that the display medium layer 130 in the display area A1 provides the operating mode of a liquid crystal lens. In some embodiments, the display medium molecules DM may include VA liquid crystal molecules, OCB liquid crystal molecules, twisted nematic (TN) liquid crystal molecules, or in-plane switching (IPS) liquid crystal molecules, so that the display medium layer 130 in the display area A1 provides the operating mode of a liquid crystal barrier.

[0082] In the display area A1, the display device 10 may include a plurality of pixels or sub-pixels PXd. The display area A1 is, for example, the area where the sub-pixels PXd are located. Each sub-pixel PXd may include one or more light-emitting elements 140. The light-emitting elements 140 may be disposed on the substrate 110. The light-emitting elements 140 may be, for example, micro light-emitting diodes, organic light-emitting diodes, or other self-luminous elements. For example, each sub-pixel PXd includes three light-emitting elements, and the three light-emitting elements may respectively have different light colors, for example, red light, green light, and blue light, so that each sub-pixel PXd can form a pixel of the display device 10, thereby realizing a full-color display effect. However, the number or light color of the light-emitting elements 140 is not particularly limited. In some embodiments, each sub-pixel PXd may include one, two, four, or more light-emitting elements 140.

[0083] The display device 10 may further include a circuit structure provided corresponding to the light-emitting element 140. The circuit structure includes, for example, a transistor T1. The transistor T1 may be disposed on the substrate 110. For example, the transistor T1 may be disposed between the substrate 110 and the light-emitting element 140. The gate G1 of the transistor T1 may receive a gate signal, and the source S1 of the transistor T1 may receive a source signal. By controlling the on or off of the transistor T1 with the gate signal, the source signal can be transmitted to the electrode 141 of the light-emitting element 140 through the channel C1 and the drain D1 of the transistor T1. In some embodiments, the electrode 141 of the light-emitting element 140 is electrically connected to the drain D1 of the transistor T1 through a conductive member 143.

[0084] The materials of the gate G1, the source S1, and the drain D1 of the transistor T1 may include an opaque conductive material, such as molybdenum, aluminum, titanium, copper, gold, silver, or other metals, or an alloy of any two or more of the above metals, or other conductive materials, or a stack of individual layers of any two or more of the above conductive materials. The material of the channel C1 of the transistor T1 may include, for example, polysilicon or a conductive oxide, but is not limited thereto.

[0085] In some embodiments, the display device 10 further includes a conductive member 144, a wire 146, a wire 148, and a signal source PS. The electrode 142 of the light-emitting element 140 may be electrically connected to the wire 146 through the conductive member 144. The wire 146 may be electrically connected to the wire 148, and the wire 148 may be electrically connected to the signal source PS. By controlling the signal transmitted by the signal source PS or the on or off of the transistor T1, it is possible to control whether the light-emitting element 140 emits light. In some embodiments, the signal source PS is a voltage source.

[0086] The transparent electrode layer 150 of the display device 10 may be disposed on the substrate 120. For example, the transparent electrode layer 150 may be located between the display medium layer 130 and the substrate 120. The transparent electrode layer 150 may overlap the light-emitting element 140. When no voltage is applied to the transparent electrode layer 150, the display medium molecules DM in the display medium layer 130 may be in a vertically aligned penetrating state, as Figure 1B shown. At this time, the display area A1 may present a 2D image provided by the light-emitting element 140. When a voltage is applied to the transparent electrode layer 150, the display medium molecules DM in the display medium layer 130 can be driven to rotate by the electric field generated by the transparent electrode layer 150, as Figure 1CAs shown, some sub - sections in the display area A1 are made translucent, while some other sub - sections are made opaque, or the light - emitting refraction angles are made different, so as to provide an effect similar to that of a liquid - crystal refractive lens or a liquid - crystal parallax barrier. In this way, the viewer's two eyes can respectively receive light from different sub - pixels PXd, that is, the two eyes respectively receive different images, thereby generating a 3D visual effect. In some embodiments, the translucent sub - sections and the opaque sub - sections in the display area A1 may be arranged alternately.

[0087] The transparent electrode layer 150 may include a plurality of transparent electrode patterns 152, such as strip - shaped transparent electrode patterns. There may be a plurality of slits ST1 between the plurality of transparent electrode patterns 152. In some embodiments, the slits ST1 between the transparent electrode patterns 152 have a substantially uniform pitch d. The pitch d may be about 3 μm to 600 μm, such as 100 μm, but is not limited thereto. In some embodiments, the width of the transparent electrode pattern 152 in the same direction as the pitch d is about 3 μm to 600 μm, such as 200 μm, but is not limited thereto. In some embodiments, there is an angle θ between the extending direction Ds of the transparent electrode pattern 152 and the long - side direction Dx of the display device 10, and the angle θ may be between 30° and 60°, such as 37° or 55°, but is not limited thereto.

[0088] In the display area A2, the display device 10 may include a plurality of pixels or sub - pixels PXc. The display area A2 is, for example, the area where the sub - pixels PXc are located. In the display area A2, the display device 10 may further include a transistor T2 and a pixel electrode 160 provided corresponding to the sub - pixel PXc. The pixel electrode 160 is, for example, electrically connected to the drain D2 of the transistor T2. By controlling the on or off of the transistor T2, a signal can be transmitted to the pixel electrode 160 through the drain D2 of the transistor T2. In some embodiments, the pixel electrode 160 is located between the substrate 110 and the display medium layer 130, but is not limited thereto. In some embodiments, the material of the pixel electrode 160 may include a transparent conductive material. In some embodiments, the drain of the transistor T2 is located between the pixel electrode 160 and the substrate 110. In some embodiments, the pixel electrode 160 has a plurality of slits ST2.

[0089] In some embodiments, the display device 10 further includes a transparent surface electrode 170. The transparent surface electrode 170 may be located on the side of the display medium layer 130 opposite to the pixel electrode 160. For example, the transparent surface electrode 170 is disposed on the substrate 120, and the transparent surface electrode 170 is located between the display medium layer 130 and the substrate 120. The transparent surface electrode 170 may be disposed corresponding to the pixel electrode 160. In some embodiments, the transparent surface electrode 170 is only disposed in the display area A2. The electric field formed by the pixel electrode 160 and the transparent surface electrode 170 can drive the display medium molecules DM in the display area A2 of the display medium layer 130 to rotate and switch, for example, between a vertical state (such as Figure 1B shown) and a planar state (such as Figure 1C shown). In some embodiments, by changing the magnitude of the applied electric field and the speed of electric field removal, the state of the display medium molecules DM can be changed.

[0090] In some other embodiments, the display device 10 further includes a transparent electrode 175 located in the display area A2. The transparent electrode 175 may be disposed on the substrate 110. For example, the transparent electrode 175 is located between the pixel electrode 160 and the substrate 110, and the transparent electrode 175 can receive a signal through, for example, a wire 177. In some embodiments, the transparent electrode 175 is a transparent surface electrode. The transparent electrode 175 may be disposed corresponding to the pixel electrode 160. In some embodiments, the transparent electrode 175 is only disposed in the display area A2. The electric field formed by the pixel electrode 160 and the transparent electrode 175 can drive the display medium molecules DM in the display area A2 of the display medium layer 130 to rotate and switch, for example, between a vertical state (such as Figure 1B shown) and a planar state (such as Figure 1C shown). In some embodiments, by changing the magnitude of the applied electric field and the speed of electric field removal, the state of the display medium molecules DM can be changed. In some embodiments, the transparent surface electrode 170 and the transparent electrode 175 may be alternatively disposed.

[0091] For example, when all the display medium molecules DM in the sub-pixel PXc are in the vertical state, the display medium layer 130 in the sub-pixel PXc is in the transmissive state. When all the display medium molecules DM in the sub-pixel PXc are in the planar state, the display medium layer 130 in the sub-pixel PXc is in the non-transmissive state. When a part of the display medium molecules DM in the sub-pixel PXc are in the vertical state and another part of the display medium molecules DM are in the planar state, the display medium layer 130 in the sub-pixel PXc is in a partially transmissive state, so that the display medium layer 130 in the sub-pixel PXc can provide different degrees of transmittance, and further enable the sub-pixel PXc to provide, for example, different degrees of gray levels. In this way, the display medium layer 130 in any sub-pixel PXc in the display area A2 can be switched between the non-transmissive state (minimum transmittance), the transmissive state (maximum transmittance), and the transmittance between the non-transmissive state and the transmissive state. In some embodiments, the transmittance of the display medium layer 130 is from 0% to 95%, such as about 25%, about 50%, or about 75%.

[0092] In some embodiments, the materials of the transparent electrode layer 150, the pixel electrode 160, and the transparent surface electrodes 170, 175 independently include oxides of metal materials, nitrides of metal materials, oxynitrides of metal materials, or other suitable transparent conductive materials, or a stacked layer of the above transparent conductive materials. For example, indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, indium gallium zinc oxide, or a stacked layer of at least two of the above, but not limited thereto.

[0093] In some embodiments, the display device 10 further includes a backlight module 180 located in the display area A2. The backlight module 180 can be provided corresponding to the sub-pixels PXc in the display area A2 to provide light sources for the sub-pixels PXc.

[0094] In some embodiments, the display device 10 further includes insulating layers I1, I2, and I3. The insulating layer I1 may be located between the signal source PS and the wire 148. The insulating layer I1 may also be located between the gate G1 of the transistor T1 and the channel C1 of the transistor T1. The insulating layer I1 may also be located between the drain D2 of the transistor T2 and the pixel electrode 160. The insulating layer I1 may also be located between the transparent electrode 175 and the substrate 110. The insulating layer I2 may be located between the drain D1 of the transistor T1 and the conductive member 143. The insulating layer I2 may also be located between the wire 146 and the conductive member 144. The insulating layer I3 may be located between the electrode 141 of the light-emitting element 140 and the conductive member 143. The insulating layer I3 may also be located between the electrode 142 of the light-emitting element 140 and the conductive member 144. The insulating layer I3 may also be located between the pixel electrode 160 and the drain D2 of the transistor T2. The materials of the insulating layers I1, I2, and I3 may include silicon oxide (SiOx), silicon nitride (SiNx), or other suitable materials. Additionally, the insulating layers I1, I2, and I3 located in the display area A1 and the insulating layers I1, I2, and I3 located in the display area A2 may belong to the same film layer respectively.

[0095] Hereinafter, use Figures 2 to 3B to continue to describe other embodiments of the present invention, and, following Figures 1A to 1C the element numbers and related contents of the embodiments, wherein the same or similar elements are denoted by the same reference numerals, and the description of the same technical content is omitted. For the description of the omitted parts, reference may be made to Figures 1A to 1C the embodiments, and will not be repeated in the following description.

[0096] Figure 2 is a cross-sectional schematic view of a display device 20 according to an embodiment of the present invention. Please refer to Figure 2 , the display device 20 may have a display area A1 and a display area A2, and the display device 20 may include a substrate 110, a substrate 120, a display medium layer 130, a light-emitting element 140, a transparent electrode layer 150, a pixel electrode 160, a transparent surface electrode 170, a transparent electrode 175, a backlight module 180, transistors T1, T2, and insulating layers I1, I2, and I3.

[0097] Compared with the display device 10 as shown in Figure 1B Figure 2The differences of the display device 20 shown are mainly as follows: The transparent surface electrode 170 of the display device 20 can be disposed on the substrate 110, and the pixel electrode 160 can be disposed on the substrate 120. For example, the transparent surface electrode 170 is located between the substrate 110 and the display medium layer 130, while the pixel electrode 160 is located between the substrate 120 and the display medium layer 130. In some embodiments, the transparent electrode 175 is located between the pixel electrode 160 and the substrate 120. In some embodiments, the drain of the transistor T2 is located between the pixel electrode 160 and the substrate 120. Additionally, the insulating layers I1, I2, I3 located in the display area A1 and the insulating layers I1, I2, I3 located in the display area A2 may belong to different film layers respectively.

[0098] In addition, the display device 20 may further include a planarizing layer 210. The planarizing layer 210 is located in the display area A1 and covers the light-emitting element 140 to isolate the light-emitting element 140 from the display medium molecules. The material of the planarizing layer 210 may include an organic insulating material suitable for the Ultra High Aperture (UHA) technology. For example, the planarizing layer 210 may include an acrylic material, a siloxane material, a polyimide material, or an epoxy resin material, etc.

[0099] In some embodiments, the display device 20 may further include a transparent surface electrode 220. The transparent surface electrode 220 can be located on the planarizing layer 210 in the display area A1 and on the side of the display medium layer 130 opposite to the transparent electrode layer 150. For example, the planarizing layer 210 is located between the transparent surface electrode 220 and the light-emitting element 140. In some embodiments, the transparent surface electrode 220 extends along the sidewall 210S and the upper surface 210T of the planarizing layer 210. In some embodiments, the transparent surface electrode 220 and the transparent surface electrode 170 located in the display area A2 may have the same potential. For example, the transparent surface electrode 220 and the transparent surface electrode 170 can be electrically connected to the same voltage source, but not limited thereto. In other embodiments, the transparent surface electrode 220 and the transparent surface electrode 170 may have different potentials. Through the electric field formed by the transparent surface electrode 220 and the transparent electrode layer 150, the rotation of the display medium molecules DM in the display area A1 can be controlled more precisely, thereby enhancing the 3D display effect of the display area A1.

[0100] In some embodiments, the display device 20 further includes a grating 230. The grating 230 may be located on the same side of the display medium layer 130 as the light-emitting element 140, or in other words, on the side of the display medium layer 130 opposite to the transparent electrode layer 150. For example, the grating 230 is located between the display medium layer 130 and the transparent surface electrode 220. In some embodiments, the grating 230 is disposed on the upper surface 210T of the transparent surface electrode 220. The grating 230 can form the light emitted by the light-emitting element 140 into a linearly polarized state, so that the light passing through the display medium layer 130 has a better polarization pattern, thereby making the presented 3D effect more obvious. In some embodiments, the display device 20 further includes a multilayer film (not shown in the figure). The multilayer film is, for example, located on the side of the display medium layer 130 opposite to the grating 230, and is used to reflect the light perpendicular to the polarization state of the emitted light.

[0101] Figure 3A is a top view schematic diagram of a display device 30 according to an embodiment of the present invention. Figure 3B is along Figure 3A The cross-sectional schematic diagram taken along the section line A-A' of. Please refer to Figure 3A and Figure 3B As shown in, the display device 30 may have a display area A1 and a display area A2, and the display device 30 may include a substrate 110, a substrate 120, a light-emitting element 140, a transparent electrode layer 150, a pixel electrode 160, a transparent surface electrode 170, a transparent electrode 175, a backlight module 180, transistors T1, T2, and insulating layers I1, I2, I3.

[0102] Compared with the display device 10 as Figure 1A and Figure 1B shown, Figure 3A and Figure 3B The main differences between the display device 30 shown and the display device 10 are as follows: The display device 30 may further have a display area A3 located between the display area A1 and the display area A2, and the display device 30 may include a display medium layer 310 located in the display area A1, a display medium layer 320 located in the display area A2, and a sealant 305 located in the display area A3. In some embodiments, the sealant 305 isolates the display medium layer 310 from the display medium layer 320. In this way, the display medium layer 310 and the display medium layer 320 can each select different types of display medium molecules to optimize the optical performance required for each of the display areas A1 and A2. In some embodiments, the material of the sealant 305 may be the same as the material of the sealant 105, but this is not limiting.

[0103] In some embodiments, the display medium layer 310 includes display medium molecules DM1 of a first type, and the display medium layer 320 includes display medium molecules DM2 of a second type. For example, one of the display medium layer 310 and the display medium layer 320 may use a positive-type liquid crystal, while the other of the display medium layer 310 and the display medium layer 320 may use a negative-type liquid crystal. In some embodiments, the birefringence (Δn) of the display medium molecules of the first type is greater than the Δn of the display medium molecules of the second type. The birefringence gives the display medium molecules (e.g., liquid crystal molecules) optical activity, which allows light to penetrate and can change the direction of the light, so that the display area A1 has a better 3D display effect.

[0104] In addition, compared with the component configuration of the display area A1, the main difference in the component configuration of the display area A3 is that: the display medium layer 310 and the transparent electrode layer 150 are not provided in the display area A3. Therefore, the display area A3 can only present a 2D picture. In some embodiments, the display area A3 and the display area A2 together present a 2D picture. In some embodiments, the voltage of the light-emitting element 140 located in the display area A3 is different from the voltage of the light-emitting element 140 located in the display area A1, but this is not limiting.

[0105] The number of light-emitting elements 140 covered by the dam 305 can be determined according to the required width of the dam 305. In some embodiments, the dam 305 covers at least one light-emitting element 140 in the width direction along the long side direction Dx and the short side direction Dy of the display device 30. In some embodiments, a part of the light-emitting element 140 located in the display area A3 is covered by the dam 305, and another part of the light-emitting element 140 located in the display area A3 is not covered by the dam 305. For example, some of the light-emitting elements 140 in the display area A3 adjacent to the display area A1 or the display area A2 may not be covered by the dam 305. In some embodiments, the voltage of the light-emitting element 140 located in the display area A3 and covered by the dam 305 is different from the voltage of the light-emitting element 140 located in the display area A1 and overlapping the transparent electrode layer 150. In some embodiments, the voltage of the light-emitting element 140 not overlapping the transparent electrode layer 150 is different from the voltage of the light-emitting element 140 overlapping the transparent electrode layer 150.

[0106] In summary, the display device of the present invention can reduce the thickness and weight of the display device by providing a light-emitting element, a transparent electrode layer responsible for 2D / 3D switching, and a display medium layer in the display area that requires 3D display, and does not affect the resolution of 2D display. In addition, the display device of the present invention can further optimize the optical performance of the 3D display area by sequentially providing a UHA planarization layer, a transparent surface electrode, and a grating on the light-emitting element in the 3D display area. Furthermore, the display device of the present invention can also optimize the optical performance of each display area individually by providing a sealant between the 2D display area and the 3D display area, so that different types of display media can be provided in the 2D display area and the 3D display area.

[0107] Although the present invention has been disclosed above in embodiments, it is not intended to limit the present invention. Any person of ordinary skill in the art can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope defined by the appended claims.

Claims

1. A display device having a first display area and a second display area, and comprising: A first substrate; A second substrate overlapping the first substrate; A display medium layer located between the first substrate and the second substrate; Light-emitting elements located in the first display area and between the first substrate and the display medium layer; A transparent electrode layer located in the first display area and between the second substrate and the display medium layer, and comprising a plurality of transparent electrode patterns arranged at intervals; And Pixel electrodes located in the second display area and between the first substrate and the display medium layer or between the second substrate and the display medium layer.

2. The display device according to claim 1, wherein there are a plurality of first slits between the plurality of transparent electrode patterns of the transparent electrode layer.

3. The display device according to claim 1, wherein the angle between the extending direction of the plurality of transparent electrode patterns and the long side direction of the display device is between 30° and 60°.

4. The display device according to claim 1, wherein the pixel electrode has a plurality of second slits.

5. The display device according to claim 1, further comprising a planarizing layer located in the first display area and covering the light-emitting elements.

6. The display device according to claim 5, further comprising a first transparent surface electrode located on the planarizing layer and on the side of the display medium layer opposite to the transparent electrode layer.

7. The display device according to claim 6, further comprising a grating located on the first transparent surface electrode and on the same side of the display medium layer as the light-emitting elements.

8. The display device according to claim 1, further comprising a second transparent surface electrode located in the second display area and on the side of the display medium layer opposite to the pixel electrodes.

9. The display device according to claim 1, further comprising a first sealant located at the edge of the display device.

10. The display device according to claim 1, wherein the number of the light-emitting elements is plural, and the display device further comprises a second sealant covering the light-emitting elements adjacent to the second display area among the plural light-emitting elements.

11. The display device according to claim 10, wherein the display medium layer comprises: First-type display medium molecules located in the first display area; And Second-type display medium molecules located in the second display area.

12. The display device according to claim 11, wherein the birefringence of the first-type display medium molecules is greater than the birefringence of the second-type display medium molecules.

13. The display device according to claim 10, wherein the voltage of the light-emitting elements covered by the second sealant is different from the voltage of the light-emitting elements overlapping with the transparent electrode layer.

14. The display device according to claim 1, further comprising a first transistor located in the first display area and electrically connected to the light-emitting elements.

15. The display device according to claim 1 further includes a second transistor, and the second transistor is located in the second display area and electrically connected to the pixel electrode.

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