Display device

Abstract

A display device has a first display area and a second display area, and includes 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 is overlapped with the first substrate. The display medium layer is disposed between the first substrate and the second substrate. The light-emitting element is disposed between the first substrate and the display medium layer in the first display area. The transparent electrode layer is disposed between the second substrate and the display medium layer in the first display area and includes a plurality of transparent electrode patterns arranged at intervals. The pixel electrode is disposed either between the first substrate and the display medium layer or between the second substrate and the display medium layer in the second display area.

Description

[Technical Field]

[0001] The present invention relates to an optoelectronic device, and more particularly to a display device. [Previous Technology]

[0002] Currently, monitors capable of switching between 2D and 3D images all have an additional liquid crystal cell (LC cell) superimposed on the LCD panel that displays 2D images, making the monitor very thick and heavy. In addition, for some images that only require 2D display, equipping an entire LC cell responsible for 2D / 3D switching will also reduce the resolution of the 2D display image. [Summary of the Invention]

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

[0004] One 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 is located between the first substrate and the display medium layer or between the second substrate and the display medium layer.

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

[0006] In one embodiment of the present invention, 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°.

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

[0008] In one embodiment of the present invention, the display device further includes a planarization layer, which is located in the first display area and covers the light-emitting element.

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

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

[0011] In one 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 one embodiment of the present invention, the display device further includes a first frame adhesive, which is located at the edge of the display device.

[0013] In one embodiment of the present invention, the number of light-emitting elements is multiple, and the display device further includes a second frame adhesive, which covers the light-emitting elements of the multiple light-emitting elements that are adjacent to the second display area.

[0014] In one embodiment of the present invention, the display medium layer includes a first type of display medium molecule located in a first display area and a second type of display medium molecule located in a second display area.

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

[0016] In one embodiment of the present invention, the voltage of the light-emitting element covered by the second frame adhesive is different from the voltage of the light-emitting element overlapping the transparent electrode layer.

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

[0018] In one 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] In order to make the above features and advantages of the present invention more apparent and understandable, specific embodiments are described below, and detailed descriptions are given in conjunction with the accompanying drawings.

Implementation Method

[0020] In the accompanying drawings, the thicknesses of layers, films, panels, regions, etc., are enlarged for clarity. Throughout the specification, the same reference numerals denote the same 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 may be directly on or connected to the other element, or intermediate elements may also be present. Conversely, when an element is referred to as being "directly on" or "directly connected" to another element, no intermediate elements are present. As used herein, "connection" may refer to a physical and / or electrical connection. Furthermore, "electrical connection" or "coupling" may mean that other elements exist between the two elements.

[0021] 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 parts, these elements, components, regions, layers, and / or parts should not be limited by these terms. These terms are used only to distinguish one element, component, region, layer, or part from another element, component, region, layer, or part. Therefore, the first "element," "component," "region," "layer," or "part" discussed below may be referred to as a second element, component, region, layer, or part without departing from the teachings of this document.

[0022] The terminology used herein is for the purpose of describing particular embodiments only and is not restrictive. As used herein, unless the content clearly indicates otherwise, the singular forms "a," "an," and "the" are intended to include the 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 "comprising" and / or "including" specify the presence of the stated features, areas, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, areas, integrals, steps, operations, elements, components, and / or combinations thereof.

[0023] Furthermore, relative terms such as “down” or “bottom” and “up” or “top” may be used herein to describe the relationship between one element and another element, as shown in the figures. It should be understood that relative terms are intended to include different orientations of the device other than those shown in the figures. For example, if a device in a figure is flipped, an element described as being “down” to other elements will be oriented “up” to other elements. Thus, the exemplary term “down” can include both “down” and “up” orientations, depending on the specific orientation of the figure. Similarly, if a device in a figure is flipped, an element described as being “down” or “below” to other elements will be oriented “above” to other elements. Thus, the exemplary term “down” or “below” can include both “up” and “down” orientations.

[0024] Given the specific number of measurements discussed and the associated errors (i.e., limitations of the measurement system), the terms "about," "approximately," or "substantially" as used herein include the value and the average value within an acceptable range of deviations of the specific value as determined by one of ordinary skill in the art. For example, "about" may mean within one or more standard deviations of the value, or within ±30%, ±20%, ±10%, ±5%. Furthermore, the terms "about," "approximately," or "substantially" as used herein may be chosen based on optical, etched, or other properties to select a more acceptable range of deviations or standard deviations, rather than applying a single standard deviation to all properties.

[0025] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having the same meaning as they have in the context of the relevant technology and the present invention, and will not be interpreted as having an idealized or overly formal meaning unless expressly defined herein.

[0026] Exemplary embodiments are described herein with reference to cross-sectional views as schematic representations of idealized embodiments. Therefore, variations in shape as a result of, for example, manufacturing techniques and / or tolerances can be expected. Consequently, the embodiments described herein should not be construed as limited to specific shapes of the regions shown herein, but rather include, for example, shape deviations resulting from manufacturing processes. For example, regions shown or described as flat may generally have rough and / or non-linear characteristics. Furthermore, acute angles shown may be rounded. Therefore, the regions shown in the figures are schematic in nature, and their shapes are not intended to show precise shapes of the regions, nor are they intended to limit the scope of the claims.

[0027] FIG1A is a top view schematic diagram of a display device 10 according to an embodiment of the present invention. FIG1B and FIG1C are cross-sectional schematic diagrams taken along the section line A-A' of FIG1A. In order to make the illustration more concise, FIG1A schematically shows the display area A1, the display area A2 and the transparent electrode layer 150, and other components are omitted.

[0028] Referring to Figures 1A and 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 between the substrate 110 and the display medium layer 130. The transparent electrode layer 150 is located in the display area A1, 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.

[0029] In a display device 10 according to an embodiment of the present invention, by providing a light-emitting element 140 and a 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, while the resolution of 2D display can be improved.

[0030] Hereinafter, with reference to the drawings, the embodiments of each element of the display device 10 will continue to be described, but the present invention is not limited thereto.

[0031] Referring to FIG1A, the display device 10 may have adjacent display areas A1 and A2. Display area A2 may be disposed along the side of display area A1. For example, display area A1 has a rectangular outline, and display area A2 may be disposed along three sides of display area A1, such that display area A2 surrounds display area A1, but is not limited thereto. In some embodiments, display area A2 may be disposed along two sides of display area A1. In other embodiments, display area A2 may be disposed along four sides of display area A1, such that display area A2 surrounds display area A1. In some embodiments, display area A1 is a 2D / 3D display area, that is, display area A1 is capable of displaying 2D and 3D images. For example, at some points in time, display area A1 can display 2D images, and at other points in time, display area A1 can display 3D images. Or, at some times, display area A1 can display 2D images, and at other times, display area A1 can display 3D images.

[0032] Display area A2 may display only 2D images. In some embodiments, the 2D images displayed in display area A2 are presented via liquid crystal display. In some embodiments, the 2D images displayed by display device 10 are presented via a combination of liquid crystal display of display area A2 and self-emissive element of display area A1. Therefore, the resolution of 2D display of display device 10 is not affected by the structure of display area A1 providing 3D display, and can still maintain a resolution similar to, for example, a 2D liquid crystal display device or a 2D light-emitting diode display device.

[0033] Referring to FIG1B, 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 (e.g., polyimide (PI)) or other suitable materials. Other components required by the display device 10, such as light-emitting elements, switching elements, driving elements, etc., may be carried on the substrate 110.

[0034] The substrate 120 of the display device 10 may be disposed face-to-face with the substrate 110, and the shortest distance between each point on the substrate 120 and the substrate 110 is approximately the same. That is, the substrate 120 and the substrate 110 may maintain a substantially uniform spacing. Generally, the substrate 120 may be a transparent substrate, and its material may be, for example, glass, polymer or other suitable material. The substrates 110 and 120 may have the same or different materials. In some embodiments, the substrate 110 and / or the substrate 120 may be a flexible substrate.

[0035] The display dielectric layer 130 is located in the space between the substrate 120 and the substrate 110. For example, the display device 10 further includes a frame adhesive 105, which can seal the space between the substrate 110 and the substrate 120 along the edges of the substrate 110 and the substrate 120, such that the display dielectric layer 130 is surrounded by the substrate 110, 120 and the space sealed by the frame adhesive 105, and the display dielectric layer 130 can be located in the display area A1 and the display area A2. In some embodiments, the material of the frame adhesive 105 includes at least one of polyurethane acrylate (PUA), epoxy acrylate and silicone, but is not limited thereto.

[0036] The display medium molecules DM of the display medium layer 130 include, for example, 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 bent (OCB) liquid crystal molecules, so that the display medium layer 130 of the display area A1 provides a liquid crystal lens operation mode. 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 of the display area A1 provides a liquid crystal barrier operation mode.

[0037] In the display area A1, the display device 10 may include a plurality of pixels or sub-pixels PXd, and 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-emissive elements. For example, each sub-pixel PXd includes three light-emitting elements, and the three light-emitting elements may each have different light colors, for example, red light, green light, and blue light, so that each sub-pixel PXd can constitute a pixel of the display device 10, thereby achieving a full-color display effect. However, there is no particular limitation on the number or color of the light-emitting elements 140. In some embodiments, each sub-pixel PXd may include one, two, four, or more light-emitting elements 140.

[0038] The display device 10 may further include a circuit structure corresponding to the light-emitting element 140, such as a transistor T1. The transistor T1 may be disposed on the substrate 110, for example, 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. The gate signal controls the opening or closing of the transistor T1, so that 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.

[0039] The gate G1, source S1, and drain D1 of transistor T1 may be made of opaque conductive materials, such as molybdenum, aluminum, titanium, copper, gold, silver, or other metals, or alloys of two or more of the above metals, or other conductive materials, or stacks of individual layers of any two or more of the above conductive materials. The channel C1 of transistor T1 may be made of, for example, polycrystalline silicon or conductive oxides, but is not limited thereto.

[0040] In some embodiments, the display device 10 further includes a conductive element 144, a wire 146, a wire 148, and a signal source PS. The electrode 142 of the light-emitting element 140 can be electrically connected to the wire 146 via the conductive element 144, the wire 146 can be electrically connected to the wire 148, and the wire 148 can be electrically connected to the signal source PS. By controlling the signal transmitted by the signal source PS or the on / off state 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.

[0041] 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 transparent state, as shown in FIG1B. At this time, the display area A1 may display a 2D image provided by the light-emitting element 140. When a voltage is applied to the transparent electrode layer 150, the electric field generated by the transparent electrode layer 150 may drive the display medium molecules DM in the display medium layer 130 to rotate, as shown in FIG1C. This may cause some sub-segments in the display area A1 to be transparent while other sub-segments are opaque, or cause different light refraction angles to provide an effect similar to a liquid crystal refractive lens or a liquid crystal parallax fence. In this way, the viewer's eyes can receive light from different sub-pixels PXd, that is, each eye receives a different image, thus producing a 3D visual effect. In some embodiments, the transparent and opaque sub-segments in the display area A1 can be arranged alternately.

[0042] The transparent electrode layer 150 may include a plurality of transparent electrode patterns 152, such as strip-shaped transparent electrode patterns. A plurality of slits ST1 may exist between the plurality of transparent electrode patterns 152. In some embodiments, the slits ST1 between the transparent electrode patterns 152 have a substantially uniform spacing d. The spacing d may be from about 3 μm to 600 μm, for example, 100 μm, but is not limited thereto. In some embodiments, the width of the transparent electrode pattern 152 in the same direction as the spacing d is from about 3 μm to 600 μm, for example, 200 μm, but is not limited thereto. In some embodiments, the extending direction Ds of the transparent electrode pattern 152 has an angle θ with the long side direction Dx of the display device 10, the angle θ being between 30° and 60°, for example, 37° or 55°, but is not limited thereto.

[0043] In the display area A2, the display device 10 may include a plurality of pixels or sub-pixels PXc, and 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 also include a transistor T2 and a pixel electrode 160 corresponding to the sub-pixels PXc, and the pixel electrode 160 is, for example, electrically connected to the drain D2 of the transistor T2. By controlling the transistor T2 to be on or off, 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 D2 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.

[0044] 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 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 disposed only 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 located in the display area A2 in the display medium layer 130 to rotate and switch between, for example, a vertical state (as shown in FIG. 1B) and a planar state (as shown in FIG. 1C). In some embodiments, the state of the display medium molecules DM can be changed by the magnitude of the applied electric field and the speed of electric field removal.

[0045] In some embodiments, the display device 10 further includes a transparent electrode 175 located in the display area A2, which 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 signals 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 disposed only 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 located in the display area A2 in the display medium layer 130 to rotate and switch between, for example, a vertical state (as shown in FIG. 1B) and a planar state (as shown in FIG. 1C). In some embodiments, the state of the display medium molecules DM can be changed by the magnitude of the applied electric field and the speed of electric field removal. In some embodiments, the transparent surface electrode 170 and the transparent electrode 175 may be selectively disposed.

[0046] For example, when all display medium molecules DM in the sub-pixel PXc are in a vertical state, the display medium layer 130 in the sub-pixel PXc is in a transparent state. When all display medium molecules DM in the sub-pixel PXc are in a planar state, the display medium layer 130 in the sub-pixel PXc is in a non-transparent state. When some display medium molecules DM in the sub-pixel PXc are in a vertical state and others are in a planar state, the display medium layer 130 in the sub-pixel PXc is in a partially transparent state, allowing the display medium layer 130 in the sub-pixel PXc to provide different degrees of transmittance, thereby allowing the sub-pixel PXc to provide, for example, different levels of grayscale. In this way, the display medium layer 130 in any sub-pixel PXc in the display area A2 can switch between a non-transparent state (minimum transmittance), a transparent state (maximum transmittance), and a transmittance between the non-transparent and transparent states. In some embodiments, the transmittance of the display medium layer 130 is 0% to 95%, for example about 25%, about 50%, or about 75%.

[0047] In some embodiments, the transparent electrode layer 150, the pixel electrode 160 and the transparent surface electrodes 170 and 175 are each independently made of an oxide of a metal material, a nitride of a metal material, an oxide of a metal material or other suitable transparent conductive material, or a stack of the above transparent conductive materials, such as indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, indium gallium zinc oxide or a stack of at least two of the above, but not limited thereto.

[0048] In some embodiments, the display device 10 further includes a backlight module 180 located in the display area A2. The backlight module 180 may correspond to the sub-pixel PXc settings in the display area A2 to provide a sub-pixel PXc light source.

[0049] In some embodiments, the display device 10 further includes insulating layers I1, I2, and I3. Insulating layer I1 may be located between the signal source PS and the wire 148. Insulating layer I1 may also be located between the gate G1 of transistor T1 and the channel C1 of transistor T1. Insulating layer I1 may also be located between the drain D2 of transistor T2 and the pixel electrode 160. Insulating layer I1 may also be located between the transparent electrode 175 and the substrate 110. Insulating layer I2 may be located between the drain D1 of transistor T1 and the conductive element 143. Insulating layer I2 may also be located between the wire 146 and the conductive element 144. Insulating layer I3 may be located between the electrode 141 of the light-emitting element 140 and the conductive element 143. Insulating layer I3 may also be located between the electrode 142 of the light-emitting element 140 and the conductive element 144. Insulating layer I3 may also be located between the pixel electrode 160 and the drain D2 of transistor T2. The insulating layers I1, I2, and I3 may be made of silicon oxide (SiOx), silicon nitride (SiNx), or other suitable materials. Furthermore, the insulating layers I1, I2, and I3 located in display area A1 and the insulating layers I1, I2, and I3 located in display area A2 may belong to the same film layer.

[0050] Hereinafter, other embodiments of the present invention will be described using Figures 2 to 3B, and the element references and related content of the embodiments of Figures 1A to 1C will be used, wherein the same reference numerals are used to represent the same or similar elements, and the description of the same technical content is omitted. Regarding the description of the omitted parts, please refer to the embodiments of Figures 1A to 1C, and will not be repeated in the following description.

[0051] FIG2 is a cross-sectional schematic diagram of a display device 20 according to an embodiment of the present invention. Referring to FIG2, 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 and T2, and insulating layers I1, I2, and I3.

[0052] The main difference between the display device 10 shown in FIG. 1B and the display device 20 shown in FIG. 2 is that 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 D2 of the transistor T2 is located between the pixel electrode 160 and the substrate 120. In addition, 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 can belong to different film layers.

[0053] In addition, the display device 20 may also include a planarization layer 210, which 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 DM. The material of the planarization layer 210 may include organic insulating materials suitable for Ultra High Aperture (UHA) technology. For example, the planarization layer 210 may include acrylic material, siloxane material, polyimide material, or epoxy resin material, etc.

[0054] In some embodiments, the display device 20 may further include a transparent surface electrode 220, which may be located on the planarization layer 210 of the display area A1 and on the side of the display medium layer 130 opposite to the transparent electrode layer 150. For example, the planarization 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 planarization 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 may be electrically connected to the same voltage source, but are not limited thereto. In other embodiments, the transparent surface electrode 220 and the transparent surface electrode 170 may have different potentials. The electric field formed by the transparent surface electrode 220 and the transparent electrode layer 150 can more precisely control the rotation of the display medium molecules DM in the display area A1, thereby enhancing the 3D display effect of the display area A1.

[0055] In some embodiments, the display device 20 further includes a grating 230, which may be located on the same side of the display medium layer 130 as the light-emitting element 140, or 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 mode, thereby making the presented 3D effect more obvious. In some embodiments, the display device 20 further includes a multilayer film (not shown), which is located, for example, on the side of the display medium layer 130 opposite to the grating 230, for reflecting light perpendicular to the emitted light polarization state.

[0056] FIG3A is a top view schematic diagram of a display device 30 according to an embodiment of the present invention. FIG3B is a cross-sectional schematic diagram taken along the section line A-A' of FIG3A. Referring to FIG3A and FIG3B, 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 and T2, and insulating layers I1, I2, and I3.

[0057] Compared with the display device 10 shown in Figures 1A and 1B, the display device 30 shown in Figures 3A and 3B differs mainly in that: the display device 30 may also have a display area A3 located between display area A1 and display area A2, and the display device 30 may include a display medium layer 310 located in display area A1, a display medium layer 320 located in display area A2, and a frame adhesive 305 located in display area A3. In some embodiments, the frame adhesive 305 isolates the display medium layer 310 from the display medium layer 320, so that 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 by display area A1 and display area A2 respectively. In some embodiments, the material of the frame adhesive 305 may be the same as the material of the frame adhesive 105, but is not limited thereto.

[0058] In some embodiments, display medium layer 310 includes a first type of display medium molecule DM1, and display medium layer 320 includes a second type of display medium molecule DM2. For example, one of display medium layer 310 and display medium layer 320 may use positive liquid crystal, while the other of display medium layer 310 and display medium layer 320 may use negative liquid crystal. In some embodiments, the birefringence (Δn) of the first type of display medium molecule DM1 is greater than the Δn of the second type of display medium molecule DM2. The birefringence enables the display medium molecules (e.g., liquid crystal molecules) to have optical rotation, which allows light to pass through and can change the direction of light, so that display area A1 has a better 3D display effect.

[0059] Furthermore, compared to the component configuration of display area A1, the main difference in the component configuration of display area A3 is that display area A3 does not have a display medium layer 310 and a transparent electrode layer 150. Therefore, display area A3 can only display a 2D image. In some embodiments, display area A3, together with display area A2, displays a 2D image. In some embodiments, the voltage of the light-emitting element 140 located in display area A3 is different from the voltage of the light-emitting element 140 located in display area A1, but this is not a limitation.

[0060] The number of light-emitting elements 140 covered by the frame adhesive 305 can be determined according to the required width of the frame adhesive 305. In some embodiments, the frame adhesive 305 covers at least one light-emitting element 140 in the width directions along the long side direction Dx and the short side direction Dy of the display device 30. In some embodiments, a portion of the light-emitting elements 140 located in the display area A3 is covered by the frame adhesive 305, and another portion of the light-emitting elements 140 located in the display area A3 is not covered by the frame adhesive 305. For example, a portion 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 frame adhesive 305. In some embodiments, the voltage of the light-emitting elements 140 located in the display area A3 that are covered by the frame adhesive 305 is different from the voltage of the light-emitting elements 140 located in the display area A1 that overlap the transparent electrode layer 150. In some embodiments, the voltage of the light-emitting elements 140 that do not overlap the transparent electrode layer 150 is different from the voltage of the light-emitting elements 140 that overlap the transparent electrode layer 150.

[0061] In summary, the display device of the present invention, by providing a light-emitting element, a transparent electrode layer responsible for 2D / 3D switching, and a display medium layer in the display area requiring 3D display, can reduce the thickness and weight of the display device without affecting the resolution of the 2D display. Furthermore, the display device of the present invention can also sequentially provide a UHA planarization layer, a transparent surface electrode, and a grating on the light-emitting element in the 3D display area to further optimize the optical performance of the 3D display area. In addition, the display device of the present invention can also provide a frame adhesive between the 2D and 3D display areas, allowing different types of display media to be provided in the 2D and 3D display areas to individually optimize the optical performance of each display area.

[0062] 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. [Simplified Explanation of the Diagram]

[0063] FIG1A is a top view schematic diagram of a display device according to an embodiment of the present invention. FIG1B to FIG1C are cross-sectional schematic diagrams taken along section line A-A' of FIG1A. FIG2 is a cross-sectional schematic diagram of a display device according to an embodiment of the present invention. FIG3A is a top view schematic diagram of a display device according to an embodiment of the present invention. FIG3B is a cross-sectional schematic diagram taken along section line A-A' of FIG3A.

Claims

1. A display device having a first display area and a second display area, and comprising: First substrate; The second substrate overlaps the first substrate; A display dielectric layer is located between the first substrate and the second substrate; A light-emitting element is located in the first display area and between the first substrate and the display medium layer; a 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; and a 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, wherein a plurality of first slits exist between the plurality of transparent electrode patterns of the transparent electrode layer, and the pixel electrode has a plurality of second slits.

2. The display device as claimed in 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°.

3. The display device as claimed in claim 1 further includes a planarization layer located in the first display area and covering the light-emitting element.

4. The display device as claimed in claim 3 further includes a first transparent surface electrode, the first transparent surface electrode being located on the planarization layer and on the side of the display medium layer opposite to the transparent electrode layer.

5. The display device as claimed in claim 4 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.

6. The display device as claimed in claim 1 further includes a second transparent surface electrode, the second transparent surface electrode being located in the second display area and on the side of the display medium layer opposite to the pixel electrode.

7. The display device as claimed in claim 1, further comprising a first frame adhesive located at the edge of the display device.

8. The display device of claim 1, wherein the number of light-emitting elements is a plurality, and the display device further includes a second frame adhesive that covers the light-emitting elements of the plurality of light-emitting elements adjacent to the second display area.

9. The display device as claimed in claim 8, wherein the display medium layer comprises: The first type of display medium molecule is located in the first display area; And a second type of display medium molecule, located in the second display area.

10. The display device of claim 9, wherein the birefringence of the first type of display medium molecules is greater than the birefringence of the second type of display medium molecules.

11. The display device as claimed in claim 8, wherein the voltage of the light-emitting element covered by the second frame adhesive is different from the voltage of the light-emitting element overlapping the transparent electrode layer.

12. The display device of claim 1 further includes a first transistor located in the first display area and electrically connected to the light-emitting element.

13. The display device of claim 1 further includes a second transistor located in the second display area and electrically connected to the pixel electrode.

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