TWM650976U - Display device - Google Patents

Abstract

A display device includes a display panel, a first anti-peeping structure and a light sensing device. The first anti-peeping structure is disposed on one side of the display panel and overlaps with each other, wherein the first anti-peeping structure has a first hollow portion. The light sensing device overlaps the first hollow portion of the first anti-peeping structure in top view.

Description

display device

The present invention relates to a display device, and in particular, to a display device that improves the sensing effect of a light sensing device.

Display devices including display panels have been widely used in various electronic products such as notebook computers, smart phones, etc. due to their thin and light appearance, low power consumption, and no radiation pollution. Wearable devices, smart watches, and car displays, etc., to provide more convenient information transmission and display. When a light-sensing device (such as a photographic lens) is disposed in a display device, the light-sensing device may suffer from interference from components and/or structures used for display in the display device, resulting in poor sensing results. Accordingly, this situation must be improved.

The invention provides a display device that improves the sensing effect of the light sensing device through the configuration design of the first anti-peep structure, the display panel and the light sensing device.

In order to solve the above technical problems, the present invention provides a display device, which includes a display panel, a first anti-peep structure and a light sensing device. The first privacy-preventing structures are disposed on one side of the display panel and overlap each other, wherein the first privacy-preventing structures have a first hollow portion. The light sensing device overlaps the first defense unit in a top view. A peek into the first hollowed-out part of the structure.

Since the light-sensing device of the present invention overlaps in the hollowed-out portion, the light-sensing device can receive external light with strong light intensity, thereby improving the shooting and sensing effects of the light-sensing device.

100,100A,200,300,300A,300B,400,400A,500: display device

110:Display panel

110D:Display area

110P, 120P, 320P: Surrounding area

110s: Light sensing part

110T:Touch sensing panel

110v: The second hollowing part

112: First substrate

114:Circuit component layer

116: Display media layer

118:Second substrate

120: The first privacy protection structure

120A, 320A: active area

120T, 320T: Touch sensing anti-peep structure

120v: The first hollowing part

122: First light control substrate

124a: First light control electrode

124b: Second light control electrode

126: First light control medium layer

128: Second light control substrate

130:Cover

130a: Lower surface

130b: Upper surface

140:Light sensing device

150:Backlight module

160:Touch sensing element

162:Touch sensing electrode

320: Second privacy protection structure

320v: The third hollowed out part

322:Third light control substrate

324a: Third light control electrode

324b: Fourth light control electrode

326: Second light control medium layer

328: The fourth light control substrate

414a: first electrode

414b: Second electrode

416: Dielectric layer of light sensing part

Lc: collimated light

Ld: scattered light

PD1, PD2, PD3, PD3A, PD3B: anti-peep display module

PM: privacy module

TH1,TH2,TH3,TH3A,TH3B,TH5: hollow area

VA1: first angle of view range

VA2: Second perspective range

X,Y,Z: direction

Figure 1 shows a schematic top view of a display device according to a first embodiment of the present invention.

FIG. 2 is a schematic three-dimensional view of the display panel, the first anti-peep structure and the light sensing device according to the first embodiment of the present invention.

Figure 3 shows a schematic cross-sectional view along line A-A' in Figure 1 .

FIG. 4 is a schematic cross-sectional view of the display device in the first state and the second state according to the first embodiment of the present invention.

FIG. 5 is a three-dimensional schematic diagram of a display panel, a first anti-peep structure and a light sensing device according to a variation of the first embodiment of the present invention.

FIG. 6 shows a schematic top view of a display device according to a second embodiment of the present invention.

FIG. 7 is a schematic three-dimensional view of the display panel, the first anti-peep structure and the light sensing device according to the second embodiment of the present invention.

Figure 8 shows a schematic cross-sectional view along line B-B' in Figure 6 .

FIG. 9 is a schematic top view of a display device according to a third embodiment of the present invention.

FIG. 10 is a three-dimensional schematic diagram of a display panel, a first privacy protection structure, a second privacy protection structure and a light sensing device according to a third embodiment of the present invention.

Figure 11 is a schematic cross-sectional view along line C-C' of Figure 9 .

FIG. 12 is a schematic cross-sectional view of a display device according to a variation of the third embodiment of the present invention.

FIG. 13 is a schematic cross-sectional view of a display device according to another modified embodiment of the third embodiment of the present invention.

FIG. 14 is a schematic top view of a display device according to a fourth embodiment of the present invention.

FIG. 15 is a schematic three-dimensional view of the display panel, the first anti-peep structure and the light sensing device according to the fourth embodiment of the present invention.

Figure 16 shows a schematic cross-sectional view along line D-D' in Figure 14 .

FIG. 17 is a schematic cross-sectional view of the light sensing portion of the display panel of the display device according to the fourth embodiment of the present invention.

FIG. 18 is a schematic three-dimensional view of a display panel, a first anti-peep structure and a light sensing device according to a variation of the fourth embodiment of the present invention.

FIG. 19 is a schematic top view of a display device according to the fifth embodiment of the present invention.

FIG. 20 is a schematic three-dimensional view of a display panel, a first privacy protection structure, a second privacy protection structure and a light sensing device according to a fifth embodiment of the present invention.

Fig. 21 is a schematic cross-sectional view along the E-E' line in Fig. 19.

Figure 22 shows a schematic cross-sectional view of the display device with a collimated backlight module of the present invention in a first state.

FIG. 23 is a schematic cross-sectional view of the display device with a collimated backlight module of the present invention in the second state.

In order to enable those skilled in the art to further understand the invention, preferred embodiments of the invention are enumerated below, and the composition and intended effects of the invention are described in detail with reference to the accompanying drawings. It should be noted that the accompanying drawings are simplified schematic diagrams. Therefore, only the components and combination relationships related to this creation are shown. system to provide a clearer description of the basic architecture or implementation method of this creation, while the actual components and layout may be more complex. In addition, for convenience of explanation, the components shown in the drawings of this invention are not drawn in proportion to the actual number, shape, and size of the components, and their detailed proportions can be adjusted according to design requirements.

In the following description and claims, words such as "include", "contains", and "have" are open-ended words, so they should be interpreted to mean "including but not limited to...". Therefore, when the terms "comprising", "containing" and/or "having" are used in the description of this creation, they specify the presence of the corresponding features, regions, steps, operations and/or components, but do not exclude the presence of one or more The existence of corresponding features, regions, steps, operations and/or components.

In the following description and claims, when "A1 component is formed by B1", it means that B1 exists or uses B1 in the formation of component A1, and the formation of component A1 does not exclude one or more other features, regions, steps, The existence or use of operations and/or components.

In the description and claims below, the term "horizontal direction" means a direction parallel to the horizontal plane, the term "horizontal plane" means a surface parallel to the directions X and Y in the drawings, and the term "vertical direction" means a direction parallel to the directions X and Y in the drawings. The direction Z in the figure, and the direction X, the direction Y and the direction Z are perpendicular to each other. In the specification and claims, the term "top view" refers to the viewing result along the vertical direction, and the term "section" refers to the viewing result when the structure is cut along the vertical direction and viewed from the horizontal direction.

In the specification and claims, the term "parallel" means that the angle between two components may be less than or equal to a specific angle, such as 5 degrees, 3 degrees or 1 degree.

In the description and claims below, the term "overlap" means the overlap of two members in direction Z, and, unless otherwise specified, the term "overlap" includes partial overlap or complete overlap, where the two members may be in direct contact with each other. Or there is a spacer between the two components.

The ordinal numbers used in the specification and claims, such as "first", "second", etc., are used to modify elements. They do not themselves imply or represent that the element (or elements) have any previous ordinal numbers, nor do they mean that the element(s) have any previous ordinal numbers. It does not represent the order of one element with another element, or the order of the manufacturing method. The use of these numbers is only used to clearly distinguish an element with a certain name from another element with the same name. The claim and the description may not use the same words. Accordingly, the first component in the description may be the second component in the claim.

It should be noted that the following embodiments can be replaced, reorganized, and mixed with features of several different embodiments without departing from the spirit of the invention to complete other embodiments. Features of various embodiments may be mixed and matched as long as they do not violate the spirit of creation or conflict.

The display device of the present invention may include a non-self-luminous display or a self-luminous display. Examples of the non-self-luminous display may be a liquid crystal display (LCD), an electrophoretic display or other suitable displays. Examples of displays may include light emitting diodes (LEDs), such as organic light-emitting diodes (OLEDs), inorganic light-emitting diodes (LEDs), sub-millimeter light-emitting diodes (LEDs), etc. Diodes (mini LED), micro light emitting diodes (micro-LED), quantum dot light emitting diodes (QLED, QDLED) or other suitable light emitting diodes, but are not limited to this. It should be noted that examples of liquid crystal displays of this invention can be vertical alignment liquid crystal displays (Vertical Alignment Liquid Crystal Display, VA LCD), horizontal electric field driven liquid crystal displays (In-Plane-Switching Liquid Crystal Display, IPS LCD), edge-type liquid crystal displays Fringe Field Switching Liquid Crystal Display (FFS LCD) or other suitable types of liquid crystal displays, but is not limited to this. In this invention, the display device may include components with sensing functions according to requirements, such as touch sensing components, light sensing components, and/or other suitable sensing components.

The display device of the present invention may include an active area and a peripheral area located at least one outside of the active area, where the active area includes a display area for displaying images, and may selectively include a sensing area and/or a sensing area according to the application of the display device. The electronic components used to assist the active area can be arranged in the peripheral area, but are not limited to this.

Please refer to Figures 1 to 4. Figure 1 shows a top view of a display device according to a first embodiment of the invention. Figure 2 shows a display panel, a first anti-peep structure and a light sensor according to the first embodiment of the invention. A schematic three-dimensional view of the device. Figure 3 shows a schematic cross-sectional view along the AA' line in Figure 1. Figure 4 shows a cross-section of the display device in the first state and the second state according to the first embodiment of the present invention. Schematic diagram. It should be noted that examples of the display devices shown in FIGS. 1 to 4 include non-self-luminous displays. As shown in FIGS. 1 to 3 , the display device 100 may include a display panel 110 for displaying images in a display area. In this creation, in a top view, the display panel 110 includes a display area 110D and a peripheral area 110P.

The display area 110D of the display panel 110 may include a plurality of pixels (Pixels), and the pixels may include at least one sub-pixel (Sub-pixel). In some embodiments, if the display device 100 includes a color display, for example, one pixel of the display panel 110 may include a plurality of sub-pixels, such as green sub-pixels, red sub-pixels and blue sub-pixels, but is not limited thereto. The number and color of sub-pixels can be changed according to needs. In some embodiments, if the display device 100 includes a monochrome display, one pixel of the display panel 110 may include one sub-pixel, for example, but is not limited thereto. The number, arrangement and shape of pixels and sub-pixels can be adjusted according to needs.

The display panel 110 of this embodiment may include at least one substrate, where the substrate may be a hard substrate or a flexible substrate, and may include, for example, glass, plastic, quartz, sapphire, polyimide (PI) depending on its type. ), polyethylene terephthalate (PET), other suitable materials or combinations thereof, but are not limited to this. For example, in FIGS. 1 to 3 , the display panel 110 may be a non-self-luminous display panel, and the display panel 110 may include a first substrate 112 and a second substrate 118 , but is not limited thereto. It should be noted that when the display panel 110 includes more than two substrates, the materials, shapes and sizes of the substrates may be the same or different from each other.

In FIG. 3 , the display panel 110 may include a circuit element layer 114 disposed between the first substrate 112 and the second substrate 118 of the display panel 110 (eg, disposed on the first substrate 112 ). The circuit element layer 114 may include a plurality of conductive layers, a plurality of insulating layers and at least one semiconductor layer to form electronic components in the circuit element layer 114 . Examples of materials for the conductive layer may include metals, transparent conductive materials (such as indium tin oxide (ITO), indium zinc oxide (IZO), etc.), other suitable conductive materials, or combinations thereof. Examples of materials for the insulating layer may include silicon oxide (SiO). _x ), silicon nitride (SiN _y ), silicon oxynitride (SiO _x N _y ), organic insulating materials (such as photosensitive resin), other suitable insulating materials or combinations thereof. Examples of materials for the semiconductor layer may include polycrystalline silicon (poly -silicon), amorphous silicon, metal-oxide semiconductor (IGZO) semiconductor, other suitable semiconductor materials or combinations thereof, but are not limited thereto.

The circuit element layer 114 may include appropriate electronic components in the display area 110D according to the type of the display panel 110 to perform display functions. In some embodiments, the circuit element layer 114 may include switching elements (eg, thin film transistors), display elements, and wiring (eg, scan lines, data lines), wherein each sub-pixel may include a switching element and a display element. . For example, the display panel 110 of this embodiment may be a non-self-luminous display panel (eg, a liquid crystal display panel), and its display elements may include pixel electrodes, but it is not limited thereto.

In addition, the circuit element layer 114 may be provided with electronic components that assist the display elements of the display area 110D in the peripheral area 110P. For example, the circuit element layer 114 may be provided with a display driving circuit (such as an integrated gate driver IGD and/or an integrated circuit) in the peripheral area 110P, so that the display driving circuit in the peripheral area 110P can pass through The traces (such as scan lines and data lines) are electrically connected to the scan lines and/or data lines of the display area 110D to drive the display elements to display the image.

In this embodiment (as shown in FIG. 3 ), the display panel 110 (a non-self-luminous display panel) may include a display medium layer 116 disposed between the first substrate 112 and the second substrate 118 , where the display medium layer 116 may Depending on the type of display panel 110 , appropriate materials may be included, such as liquid crystal molecules, colloidal materials used for electrophoresis, or other suitable dielectric materials. In FIG. 3 , the circuit element layer 114 is disposed between the first substrate 112 and the display medium layer 116 . In some embodiments, the circuit element layer 114 may also include a common electrode, but is not limited thereto. In some embodiments, the common electrode is disposed between the second substrate 118 and the display medium layer 116 . In this invention, the switching element can be electrically connected to the pixel circuit poles, scan lines and data lines. The scan lines are used to transmit switching signals to control the opening and closing of switching elements. The data lines are used to transmit signals required by display elements. The open switching elements can be used to control the display elements in sub-pixels ( For example, the pixel electrode) provides a signal to generate a corresponding electric field with the common electrode to correspondingly change the transparency of the display medium layer 116, thereby achieving the effect of displaying a picture.

The display panel 110 may also include required film layers and structures according to requirements. In some embodiments, the display panel 110 may also optionally include a light conversion layer disposed between the first substrate 112 and the second substrate 118 of the display panel 110 (eg, disposed between the second substrate 118 and the display medium layer 116 ) to convert or filter light into different colors of light. Examples of the light conversion layer may include color filters, quantum dot (QD) materials, fluorescent (fluorescence) materials, phosphorescence (Phosphorescence) materials, other suitable materials, or any combination thereof. In some embodiments, the display panel 110 may also optionally include a light blocking layer with light-shielding properties disposed between the first substrate 112 and the second substrate 118 of the display panel 110 (eg, disposed between the second substrate 118 and the display medium layer 116), where the light blocking layer may include, for example, black photoresist, black ink, black resin, black pigment, other suitable materials, or combinations thereof. The light blocking layer is used, for example, to shield underlying components (for example, opaque switching components or wires), or to reduce the probability of external light being reflected by components in the display panel 110 (for example, opaque switching components or wires), but does not This is the limit. In some embodiments, the light blocking layer may have a plurality of openings to define the light-emitting areas of the sub-pixels and to separate the sub-pixels in a top view. In some embodiments, the display panel 110 may also optionally include a sealant layer (not shown) disposed between the first substrate 112 and the second substrate 118 to join the first substrate 112 and the second substrate. 118, and the display medium layer 116 is located in the space formed by the first substrate 112, the second substrate 118 and the sealant layer.

In some embodiments, the display panel 110 may further include an optical film layer, such as an anti-reflective film, a brightness enhancement film, a polarizer, or other suitable optical film layers.

As shown in FIGS. 1 to 4 , the display device 100 may include a first privacy protection structure 120 , which has the function of protecting the display screen from privacy. The first privacy-preventing structure 120 of the present invention may be called a first privacy-preventing panel. exist In the embodiment where the first privacy-preventing structure 120 includes a liquid crystal layer, the first privacy-preventing structure 120 may be called a first privacy-preventing liquid crystal cell. In the present creation, the display panel 110 and the first privacy-preventing structure 120 overlap each other in plan view (ie, direction Z). As shown in FIG. 1 , the first privacy protection structure 120 includes an active area 120A and a peripheral area 120P. The active area 120A of the first privacy protection structure 120 corresponds to the display area 110D of the display panel 110 , and the peripheral area 120P of the first privacy protection structure 120 corresponds to the peripheral area 110P of the display panel 110 , that is, the first privacy protection structure 120 The active area 120A overlaps the display area 110D of the display panel 110 in the direction Z, and the peripheral area 120P of the first anti-peep structure 120 overlaps the peripheral area 110P of the display panel 110 in the direction Z, but is not limited thereto.

In some embodiments (as shown in FIG. 4 ), the first privacy-preventing structure 120 may be an adjustable privacy-preventing structure, in which the first privacy-preventing structure 120 may have a first state and a second state. The first state (or can be called Sharing state) can turn off the anti-peep function, and the second state (or can be called anti-peep state or privacy state) can turn on the anti-peep function, but is not limited to this. For example, the first anti-peep structure 120 can switch between the first state and the second state through electrical signals or other suitable methods, but is not limited to this. As shown in FIG. 4 , when the first privacy protection structure 120 is in the first state (sharing state), the user can view the display device 100 within the first viewing angle range VA1 (ie, the display device 100 has the first viewing angle range VA1 ). , and when the first anti-peep structure 120 is in the second state (the anti-peep state or the privacy state), the user can view the display device 100 within the second viewing angle range VA2 (that is, the display device 100 has the second viewing angle range VA2) , where the first viewing angle range VA1 is larger than the second viewing angle range VA2. That is to say, at some specific angles, if the first anti-peep structure 120 is in the first state (sharing state), the user can view the display screen of the display device 100 , but if the first anti-peep structure 120 is in the second state, the user can view the display screen of the display device 100 . state (privacy state or privacy state), the user cannot view or it is difficult to clearly view the display screen of the display device 100 . It should be noted that when the user is facing the display device 100, the angle between the user's viewing line of sight and the normal direction (eg, direction Z) of the light emitting surface of the display device 100 is 0 degrees. In addition, when the first privacy protection structure 120 is an adjustable privacy protection structure, when the first privacy protection structure 120 is in the first state or the second state, the light incident on the first privacy protection structure 120 can be controlled. Adjust and/or filter so that the light emitted from the first privacy structure 120 meets the current first privacy The state of the privacy structure 120 is used to turn off or enable the anti-peeping function.

In some embodiments (as shown in FIGS. 3 and 4 ), the first anti-privacy structure 120 can be an electronically controlled anti-privacy structure, so that the user can control the opening and closing of the anti-privacy function of the first anti-privacy structure 120 through electrical signals. Close. The first privacy-preventing structure 120 may include a light control substrate, where the light control substrate may be a rigid substrate or a flexible substrate, and may include, for example, glass, plastic, quartz, sapphire, polyimide, or polyvinylidene according to its type. Ethylene phthalate, other suitable materials or combinations thereof, but not limited to this. For example, in FIGS. 3 and 4 , the first anti-peeping structure 120 may include a first light control substrate 122 and a second light control substrate 128 , and the materials of the first light control substrate 122 and the second light control substrate 128 are , the shape and size may be the same or different from each other, but are not limited to this.

In the first anti-peeping structure 120 shown in FIGS. 3 and 4 , the light control medium layer and the light control electrode are disposed between the first light control substrate 122 and the second light control substrate 128 . For example, the light control medium layer may include Any suitable liquid crystal molecules, and examples of light control electrodes may include transparent conductive materials. The transparent conductive material may be, for example, indium tin oxide (ITO), but is not limited thereto. It should be noted that the material of the light control medium layer may be the same as or different from the material of the display medium layer 116 of the display panel 110 . For example, the light control medium layer of the first anti-peeping structure 120 and the display medium layer 116 of the display panel 110 may both include liquid crystal molecules, and the types of liquid crystal molecules of the light control medium layer may be the same or different from those of the display panel 110 . The type of liquid crystal molecules in the dielectric layer 116 is, but not limited to, this. The first anti-peeping structure 120 may include a first light control medium layer 126, a first light control electrode 124a and a second light control electrode 124b, wherein electrical signals may be applied to the first light control electrode 124a and the second light control electrode respectively. 124b (e.g., applying a voltage to the first light control electrode 124a and applying another voltage to the second light control electrode 124b) to control the state of the first light control medium layer 126 (e.g., controlling the state of the first light control medium layer 126 the direction of the liquid crystal molecules, or controlling the first light control medium layer 126 to be in a transparent state or a scattering state) to regulate the light emission viewing angle range after the light passes through the first privacy-preventing structure 120, so that the first privacy-preventing structure 120 is in the third first state or second state. For example, the first light control medium layer 126 may be disposed between the first light control electrode 124a and the first light control electrode 124a in the direction Z. Between the two light control electrodes 124b, the first light control electrode 124a is provided between the first light control substrate 122 and the first light control medium layer 126, and the second light control electrode 124b is provided between the second light control substrate 128 and the first light control medium layer 126. between the light control medium layers 126, but is not limited thereto. In this embodiment, the first light control electrode 124a may be disposed in the entire area of the active area 120A of the first privacy protection structure 120, and the second light control electrode 124b may be disposed in the active area 120A of the first privacy protection structure 120. The first light control electrode 124a and the second light control electrode 124b are provided in all areas, that is, in all areas of the active area 120A of the first privacy protection structure 120, but are not limited to this.

In addition, in some embodiments, the first anti-peeping structure 120 may further include two alignment films (not shown), one of which is disposed between the first light control electrode 124a and the first light control medium layer 126, Another alignment film is disposed between the second light control electrode 124b and the first light control medium layer 126, and each alignment film can be disposed in the entire area of the active area 120A of the first privacy-preventing structure 120.

In some embodiments, the first anti-peeping structure 120 may also optionally include a sealant layer (not shown) disposed between the first light control substrate 122 and the second light control substrate 128 to bond the first light control substrate 122 to the second light control substrate 128 . The substrate 122 and the second light control substrate 128, and the first light control medium layer 126 is located in the space formed by the first light control substrate 122, the second light control substrate 128 and the sealant layer.

In FIG. 4 , the first light control medium layer 126 can be adjusted by controlling the voltage difference between the first light control electrode 124a and the second light control electrode 124b, so that the first privacy-preventing structure 120 can be in the first state and the second light control electrode 124b. Switch between the two states, and adjust the direction of the light emitted from the first anti-peep structure 120 accordingly. In some embodiments, the absolute value of the voltage difference between the first light control electrode 124a and the second light control electrode 124b (ie, the first voltage difference) in the first state is different from the first voltage difference in the second state. The absolute value of the voltage difference (ie, the second voltage difference) between one light control electrode 124a and the second light control electrode 124b. For example, when the voltage difference between the first light control electrode 124a and the second light control electrode 124b is large (or small), the first anti-peep structure 120 may be in the first state; when the first light control electrode When the voltage difference between 124a and the second light control electrode 124b is small (or large), the first anti-peeping structure 120 may be in the second state, But it is not limited to this. In some embodiments, the first light control electrode 124a and/or the second light control electrode 124b in the first state are floating, and the first light control electrode 124a and the second light control electrode 124b in the second state are floating. There is a voltage difference greater than zero between the control electrodes 124b. In some embodiments, when collimated light is incident on the first privacy-preventing structure 120, the first privacy-preventing structure 120 in the first state (sharing state) can diffuse the collimated light so that it is emitted out of the first privacy-preventing structure 120. The light from the privacy structure 120 is scattered light. The first privacy structure 120 in the second state (the privacy state or the privacy state) may not adjust the collimated light or slightly adjust the collimated light so that the light from the first privacy structure 120 is emitted. It is collimated light or nearly collimated light, but is not limited to this. In some embodiments, when non-collimated light (eg, scattered light) is incident on the first privacy-preventing structure 120, the first privacy-preventing structure 120 in the first state (sharing state) can adjust the non-collimated light or slightly The non-collimated light is adjusted so that the light emitted from the first privacy-preventing structure 120 is scattered light. The first privacy-preventing structure 120 in the second state (privacy state or privacy state) can adjust the non-collimated light (eg, (Collimation) so that the light emitted from the first anti-peep structure 120 is collimated light or approximately collimated light, but is not limited to this.

As shown in FIGS. 1 to 4 , the display device 100 may include a cover 130 to protect components and structures disposed on a first side thereof, wherein the display panel 110 and the first anti-peep structure 120 are disposed on a third side of the cover 130 . one side. The material of the cover 130 may include, but is not limited to, glass, plastic, quartz, sapphire, polyimide, polyethylene terephthalate, other suitable materials, or combinations thereof. It should be noted that in FIGS. 3 and 4 , the lower surface 130a of the cover plate 130 can be adjacent to the first side of the cover plate 130 , and the upper surface 130b of the cover plate 130 relative to the lower surface 130a can be far away from the cover plate 130 The first side of the cover 130 can be the light emitting surface of the display device 100 .

In the present creation, the cover 130 , the display panel 110 and the first privacy-preventing structure 120 overlap each other in a plan view (ie, direction Z). For example, in this embodiment (as shown in FIGS. 3 and 4 ), the display panel 110 may be disposed between the first privacy structure 120 and the cover 130 , and the display panel 110 may be non-self-luminous. display panel, but not limited to this. It should be noted that in this article, the normal direction of the light-emitting surface of the display device 100, the normal direction of the first anti-peep structure 120, the normal direction of the display panel 110, the cover The normal direction and the plan view direction of the plate 130 are both the direction Z. Specifically, in this article, the normal direction of the light-emitting surface of the display device 100 is a direction perpendicular to the light-emitting surface of the display device 100 , and the normal direction of the first privacy-preventing structure 120 is perpendicular to the first privacy-preventing structure 120 . In the direction of the upper surface, the normal direction of the display panel 110 is a direction perpendicular to the upper surface of the display panel 110 , and the normal direction of the cover plate 130 is a direction perpendicular to the upper surface of the cover plate 130 .

As shown in FIGS. 1 to 4 , the display device 100 may include a light sensing device 140 disposed on the first side of the cover 130 and used to sense light. In some embodiments, the light sensing device 140 is used to sense the light of the external environment. In addition, in the present invention, the light sensing device 140 may include any suitable light sensing element. For example, the light sensing device 140 can be a camera lens, but is not limited thereto.

In a display device having a display panel, a privacy protection structure, and a light sensing device such as a photographic lens, if the light sensing device is disposed below the display panel and the privacy protection structure and overlaps the display panel and the privacy protection structure, when the light sensing device is When the sensing device performs light sensing, the external light must pass through the cover, the anti-peeping structure and the display panel to reach the light sensing device, so that the intensity of the light received by the light sensing device is weakened, and the light sensing device will be The blocking of the privacy structure and the display panel (the privacy structure and the display panel are not completely transparent) results in poor shooting results (for example, poor imaging quality). In addition, when the light sensing device is disposed below the display panel and the privacy-preventing structure and overlaps the display panel and the privacy-preventing structure, the overall thickness of the display device is also thicker, which is not in line with the current trend of thinning and lightness.

In order to avoid the above problems, in this invention, as shown in FIGS. 1 to 4 , the first anti-peeping structure 120 has a first hollowed out part 120v, the display panel 110 has a second hollowed out part 110v, and the second hollowed out part of the display panel 110 The hollow portion 110v overlaps the first hollow portion 120v of the first anti-peep structure 120 in a plan view (ie, direction Z), and the light sensing device 140 overlaps the first hollow portion 120v and the second hollow portion in a plan view. The empty part is 110v. The light sensing device 140 is located in the first hollow portion 120v and the second hollow portion 110v in a plan view (that is, the light sensing device 140 does not overlap the first anti-privacy structure 120 and the display panel 110 in the direction Z), And the light sensing device 140 is disposed in the first hollow part 120v and the second hollow part 110v (as shown in FIG. 3). As shown in Figure 3, light sensing The device 140 passes through the first hollow portion 120v and the second hollow portion 110v, but is not limited thereto. Specifically, in this embodiment, the display panel 110 and the first privacy structure 120 are stacked on each other to form the privacy display module PD1, and the first hollow portion 120v and the second hollow portion 110v are stacked on each other and connected to each other to form a penetration In the hollow area TH1 of the privacy display module PD1, the light sensing device 140 overlaps the hollow area TH1 in a plan view, and the light sensing device 140 is disposed in the hollow area TH1 (as shown in FIG. 3). Therefore, under this design, when the light sensing device 140 performs light sensing, the external light can be received by the light sensing device 140 while passing through the cover 130 but not passing through the first anti-peeping structure 120 and the display panel 110 , so that the light sensing device 140 can receive external light with relatively strong light intensity, thereby improving the shooting and sensing effects of the light sensing device 140 .

In addition, in this embodiment, since the light sensing device 140 is disposed in the first hollow portion 120v of the first anti-peep structure 120 and the second hollow portion 110v of the display panel 110 (as shown in FIG. 3 ), the display The overall thickness of device 100 can be reduced.

Since the first privacy protection structure 120 has the first hollow portion 120v, the first privacy protection structure 120 does not have any film layer or structure of the first privacy protection structure 120 in the area where the first hollow portion 120v is located. Since the display panel 110 has the second hollow portion 110v, the display panel 110 does not have any film layer or structure of the display panel 110 in the area where the second hollow portion 110v is located.

In some embodiments, the shapes of the first hollow portion 120v of the first anti-peeping structure 120 and the second hollow portion 110v of the display panel 110 in plan view may be perforations or grooves, but are not limited thereto. For example, in FIGS. 1 and 2 , the shapes of the first hollow portion 120v of the first anti-peep structure 120 and the second hollow portion 110v of the display panel 110 are grooves in plan view, but this is not considered a groove. limit. Please refer to FIG. 5 , which is a three-dimensional schematic diagram of a display panel, a first anti-peep structure and a light sensing device according to a variation of the first embodiment of the present invention. As shown in FIG. 5 , the difference between this modified embodiment and the first embodiment lies in the shape of the hollow portion. In the display device 100A shown in FIG. 5 , the first hollow portion 120v of the first privacy structure 120 and the second hollow portion 110v of the display panel 110 are perforated in plan view.

In addition, the display device 100 may also include required film layers and structures according to requirements. In Figure 3 As shown in FIG. 4 , since the display panel 110 is a non-self-luminous display panel, the display device 100 may include a backlight module 150 to provide backlight for the display panel 110 , wherein the display panel 110 and the first anti-peep structure 120 may Disposed between the backlight module 150 and the cover 130 . For example, in FIGS. 3 and 4 , the cover 130 , the first anti-peep structure 120 , the display panel 110 and the backlight module 150 overlap each other in a plan view, and the first anti-peep structure 120 can be disposed between the display panel 110 and the backlight module 150 . between the backlight modules 150 (that is, the first anti-peep structure 120 is located on the light incident side of the display panel 110), but is not limited to this. In this invention, the backlight module 150 can be any suitable backlight module, such as a direct type backlight module, an edge lit backlight module or other types of backlight modules, and the backlight module The group 150 can emit collimated light (eg, collimated backlight module) or scattered light according to requirements.

In FIGS. 3 and 4 , the light provided by the backlight module 150 passes through the first privacy structure 120 , the display panel 110 and the cover 130 in sequence. That is to say, the light will first enter the first privacy protection structure 120, and the first privacy protection structure 120 will adjust the light emission viewing angle range of the backlight module 150 after passing through the first privacy protection structure 120 according to its state. Then, These light rays will be incident on the display panel 110, and the display panel 110 will display the corresponding picture by passing the light of corresponding intensity according to the corresponding grayscale signal.

Optionally, the backlight module 150 may also have a hollow portion (such as a through hole or a groove) that overlaps the first hollow portion 120v and the second hollow portion 110v in the normal direction of the cover plate 130 (direction Z). ), and the light sensing device 140 overlaps the hollow portion of the backlight module 150 in the direction Z, but is not limited to this. That is to say, in a plan view, the backlight module 150 does not overlap the first hollow portion 120v and the second hollow portion 110v.

Optionally, as shown in FIG. 3 , the display panel 110 may also include a touch sensing element 160 for touch sensing to detect the position of a touch element (such as a stylus, a finger, etc.) or Action, wherein the touch sensing element 160 can perform sensing in any suitable manner. For example, the touch sensing element 160 may use a capacitive method for sensing, such as self-capacitance or mutual-capacitance, but is not limited thereto.

The touch sensing element 160 can be disposed at any suitable position according to requirements. For example, In FIG. 3 , the touch sensing element 160 can be disposed on the upper surface of the second substrate 118 of the display panel 110 to form an on-cell touch sensing panel 110T, but is not limited thereto. In the display device 100 , the touch sensing element 160 is disposed between the second substrate 118 and the cover 130 of the display panel 110 , but is not limited thereto. In some embodiments, the touch sensing element 160 may be disposed between the first substrate 112 and the second substrate 118 of the display panel 110 to form an in-cell touch sensing panel.

The touch sensing element 160 may include a plurality of touch sensing electrodes 162, and the touch sensing electrodes 162 may be arranged according to requirements to serve as a touch sensing unit. The touch sensing electrode 162 may include a transparent conductive layer or a metal mesh, but is not limited thereto. For example, the transparent conductive layer may include a transparent conductive material (such as indium tin oxide), but is not limited thereto. The touch sensing element 160 may also include at least one connecting wire (not shown), which is electrically connected to the corresponding touch sensing electrode 162 to transmit and/or receive touch sensing signals.

The display device of the present invention is not limited to the above-mentioned embodiments. Other embodiments will be disclosed below. However, in order to simplify the description and highlight the differences between each embodiment and the above-mentioned embodiments, the same elements will be marked with the same numbers in the following. Let’s elaborate on the repeated parts.

Please refer to Figures 6 to 8. Figure 6 shows a top view of a display device according to a second embodiment of the present invention. Figure 7 shows a display panel, a first anti-peep structure and a light sensor according to a second embodiment of the present invention. A schematic three-dimensional view of the device, Figure 8 shows a schematic cross-sectional view along the BB' line in Figure 6 . In the display device 200 shown in FIGS. 6 to 8 , the first hollow portion 120v of the first anti-peeping structure 120 and the second hollow portion 110v of the display panel 110 may be perforations in a plan view, but this is not considered as a perforation. limit. In a variation of this embodiment, the shape of the first hollow portion 120v of the first anti-peeping structure 120 and the second hollow portion 110v of the display panel 110 may be a groove similar to that of FIG. 1 and FIG. 2 , where No more details.

As shown in FIG. 8 , the difference between this embodiment and its modified embodiments and the first embodiment lies in the relative positions of the first privacy-preventing structure 120 and the display panel 110 . In the display device 200 shown in FIG. 8 , the first privacy-preventing structure 120 can be disposed between the display panel 110 and the cover 130 (that is, the first privacy-preventing structure 120 is located between the display panel 110 and the cover 130 ). the light exit side of panel 110). Under this design, the display panel 110 may be a self-luminous display panel or a non-self-luminous display panel. In addition, the non-self-luminous display panel may be a transmissive non-self-luminous display panel or a reflective non-self-luminous display panel, but is not limited thereto. In the aspect that the display panel 110 is a transmissive non-self-luminous display panel, the display panel 110 of this embodiment and its modified embodiments is similar to the display panel 110 of the first embodiment, and the display device 200 may further include The backlight module (not shown) is disposed on the light incident side of the display panel 110 (that is, the display panel 110 is disposed between the first privacy-preventing structure 120 and the backlight module). In the case where the display panel 110 is a reflective non-self-luminous display panel, the display elements may include reflective electrodes, and the reflective electrodes are used to reflect ambient light to display images. In addition, in some embodiments in which the display panel 110 is a reflective, non-self-luminous display panel, the display device 200 may further include a front light module (not shown) disposed on the light-emitting side of the display panel 110 ( That is, the front light module is disposed between the display panel 110 and the first anti-peep structure 120). In the case where the display panel 110 is a self-luminous display panel, its display elements may include light-emitting elements (such as light-emitting diodes), wherein the light-emitting elements of the display panel 110 will emit light of corresponding intensity according to the grayscale signal. to display the screen. When the display panel 110 is a reflective, non-self-luminous display panel or a self-luminous display panel, the display device 200 does not need to include a backlight module. After the light passing through the display panel 110, the light reflected by the display panel 110, or the light emitted by the light-emitting elements of the display panel 110 enters the first privacy-preventing structure 120, the first privacy-preventing structure 120 will adjust the light intensity according to its state. The light emission angle range after these light rays pass through the first privacy protection structure 120 is such that the picture displayed on the display panel 110 is in a sharing state or a privacy protection state.

As shown in FIGS. 6 to 8 , the second hollow portion 110v of the display panel 110 overlaps the first hollow portion 120v of the first anti-peep structure 120 in a plan view (ie, direction Z), and the light sensing device 140 It overlaps with the first hollow part 120v and the second hollow part 110v in the direction Z. The light sensing device 140 is located in the first hollow part 120v and the second hollow part 110v in a plan view, and the light sensing device 140 is disposed in the second hollow part 110v and the first hollow part 120v (as shown in Figure 8 ). As shown in FIG. 8 , the light sensing device 140 passes through the first hollow portion 120v and the second hollow portion 110v, but is not limited thereto. Specifically, in this embodiment, the display panel 110 and the first The privacy structures 120 are stacked on each other to form the privacy display module PD2. The first hollow portion 120v and the second hollow portion 110v are stacked on each other and connected to each other to form a hollow area TH2 that penetrates the privacy display module PD2. The light sensing device 140 It overlaps the hollowed area TH2 in a plan view, and the light sensing device 140 is disposed in the hollowed area TH2 (as shown in FIG. 8 ).

Optionally, as shown in FIG. 8 , the first privacy-preventing structure 120 may further include a touch sensing element 160 . It should be noted that in FIG. 8 , the touch sensing element 160 can be disposed on the upper surface of the second light control substrate 128 of the first anti-peep structure 120 to form an externally embedded touch sensing anti-peep structure 120T. But it is not limited to this. In the display device 200 , the touch sensing element 160 is disposed between the second light control substrate 128 and the cover 130 of the first anti-peeping structure 120 , but is not limited thereto. In some embodiments, the touch sensing element 160 may be disposed between the first light control substrate 122 and the second light control substrate 128 of the first privacy protection structure 120 to form an inline touch sensing privacy protection structure. The touch sensing element 160 may include a plurality of touch sensing electrodes 162, and the touch sensing electrodes 162 may be arranged according to requirements to serve as a touch sensing unit. The touch sensing element 160 and the touch sensing electrode 162 in this embodiment are similar to the touch sensing element 160 and the touch sensing electrode 162 in the first embodiment, and will not be described again.

Please refer to Figures 9 to 11. Figure 9 shows a top view of a display device according to a third embodiment of the present invention. Figure 10 shows a display panel, a first anti-peep structure, a second anti-peep structure and a second anti-peep structure according to the first embodiment of the present invention. A schematic three-dimensional view of the structure and the light sensing device is shown in FIG. 11 , which is a schematic cross-sectional view along the CC′ line in FIG. 9 . As shown in FIGS. 9 to 11 , the difference between this embodiment and the first embodiment is that the display device 300 of this embodiment may further include a second anti-peeping structure 320 , which is disposed on the first side of the cover 130 and on the cover. The normal direction (direction Z) of the plate 130 overlaps the display panel 110 and the first anti-peep structure 120. The first anti-peep structure 120 can be disposed between the display panel 110 and the backlight module 150. The display panel 110 can be disposed Between the first privacy structure 120 and the second privacy structure 320 , the second privacy structure 320 may be disposed between the display panel 110 and the cover 130 . In this embodiment, the cover 130 , the second privacy structure 320 , the display panel 110 and the first privacy structure 120 overlap with each other in a plan view (ie, direction Z). The second privacy protection structure 320 includes an active area 320A 320P with surrounding area. The active area 320A of the second privacy protection structure 320 corresponds to the display area 110D of the display panel 110 , and the peripheral area 320P of the second privacy protection structure 320 corresponds to the peripheral area 110P of the display panel 110 , that is, the second privacy protection structure 320 The active area 320A overlaps the display area 110D of the display panel 110 and the active area 120A of the first privacy structure 120 in the direction Z, and the peripheral area 320P of the second privacy structure 320 overlaps the peripheral area 110P of the display panel 110 in the direction Z. and the peripheral area 120P of the first privacy protection structure 120, but is not limited thereto.

The second privacy protection structure 320 has the function of protecting the display screen from privacy. The second privacy protection structure 320 is not particularly limited and can perform the privacy protection function in any suitable manner. In this creation, the second privacy protection structure 320 may be an adjustable privacy protection structure (please refer to the above description of the first privacy protection structure 120).

As shown in FIG. 11 , the second anti-peep structure 320 can be an electronically controlled anti-peep structure, so that the user can control the opening and closing of the anti-peep function of the second anti-peep structure 320 through electrical signals. The second anti-peeping structure 320 may include a light control substrate, where the light control substrate may be a hard substrate or a flexible substrate, and may include, for example, glass, plastic, quartz, sapphire, polyimide, polyp Ethylene phthalate, other suitable materials or combinations thereof, but not limited to this. For example, in FIG. 11 , the second anti-peeping structure 320 may include a third light control substrate 322 and a fourth light control substrate 328 , and the materials, shapes and shapes of the third light control substrate 322 and the fourth light control substrate 328 are The dimensions may be the same as each other or different, but are not limited to this.

In the second anti-peeping structure 320 shown in FIG. 11 , the light control medium layer and the light control electrode are disposed between the third light control substrate 322 and the fourth light control substrate 328 . The light control medium layer may include any suitable Liquid crystal molecules, and the light control electrode may include a transparent conductive material, for example. The transparent conductive material may be, for example, indium tin oxide (ITO), but is not limited thereto. It should be noted that the material of the light control medium layer may be the same as or different from the material of the display medium layer 116 of the display panel 110 . For example, the second anti-peeping structure 320 may include a second light control medium layer 326 and a third light control electrode 324a. and the fourth light control electrode 324b, wherein electrical signals can be applied to the third light control electrode 324a and the fourth light control electrode 324b respectively (for example, applying a voltage to the third light control electrode 324a and applying another voltage to the fourth light control electrode 324b. The control electrode 324b) controls the state of the second light control medium layer 326 to regulate the light emission viewing angle range after the light passes through the second privacy protection structure 320, so that the second privacy protection structure 320 is in the first state (sharing state) or the third state. Two states (privacy state or privacy state). For example, the second light control medium layer 326 may be disposed between the third light control electrode 324a and the fourth light control electrode 324b in the direction Z, but is not limited thereto. In this embodiment, the third light control electrode 324a may be disposed in the entire area of the active area 320A of the second privacy protection structure 320, and the fourth light control electrode 324b may be disposed in the active area 320A of the second privacy protection structure 320. In all areas, that is, in all areas of the active area 320A of the second privacy protection structure 320, the third light control electrode 324a and the fourth light control electrode 324b are provided, but this is not limited thereto. In addition, in some embodiments, the second anti-peeping structure 320 may further include two alignment films (not shown), one of which is disposed between the third light control electrode 324a and the second light control medium layer 326, Another alignment film is disposed between the fourth light control electrode 324b and the second light control medium layer 326, and each alignment film can be disposed in the entire area of the active area 320A of the second anti-peep structure 320.

In FIG. 11 , the second light control medium layer 326 can be adjusted by controlling the voltage difference between the third light control electrode 324a and the fourth light control electrode 324b, so that the second privacy-preventing structure 320 can be in the first state and the fourth light control electrode 324b. Switch between the two states, and adjust the direction of the light emitted from the second anti-peep structure 320 accordingly. The absolute value of the voltage difference between the third light control electrode 324a and the fourth light control electrode 324b in the first state (sharing state) is different from the third light voltage in the second state (privacy state or privacy state). The absolute value of the voltage difference between the control electrode 324a and the fourth light control electrode 324b. The operation mode of the second privacy protection structure 320 in this embodiment may be similar to the operation mode of the above-mentioned first privacy protection structure 120 , and will not be repeated here. Compared with the display devices 100 and 200 in the first and second embodiments which have one privacy protection structure (i.e., the first privacy protection structure 120), the display device 300 of this embodiment includes two privacy protection structures (i.e., the first privacy protection structure 120). A privacy-preventing structure 120 and a second privacy-preventing structure 320), thereby enhancing the privacy-preventing effect. For example, compared to just including A display device with a privacy protection structure, including two display devices with a privacy protection structure, can further reduce the brightness of a predetermined privacy viewing angle to improve the privacy protection effect. It should be noted that in some embodiments, the operation mode of the second privacy protection structure 320 may be different from the operation mode of the first privacy protection structure 120 , or the second privacy protection structure 320 may be different from the first privacy protection structure 120 .

The second privacy protection structure 320 may have a third hollow portion 320v, and the third hollow portion 320v may overlap the first hollow portion 120v of the first privacy protection structure 120 and the third hollow portion 320v of the display panel 110 in a plan view (direction Z). There are two hollow parts 110v, and the light sensing device 140 overlaps the first hollow part 120v, the second hollow part 110v and the third hollow part 320v in a plan view. The light sensing device 140 may be located in the first hollow portion 120v, the second hollow portion 110v and the third hollow portion 320v in a plan view (that is, the light sensing device 140 does not overlap the first hollow portion in the direction Z). The privacy-preventing structure 120, the display panel 110 and the second privacy-preventing structure 320). In FIG. 11 , the light sensing device 140 is provided in the first hollow part 120v, the second hollow part 110v and the third hollow part 320v, but it is not limited to this. As shown in FIG. 11 , the light sensing device 140 passes through the first hollow portion 120v, the second hollow portion 110v and the third hollow portion 320v, but is not limited thereto. Specifically, in this embodiment, the display panel 110, the first privacy structure 120 and the second privacy structure 320 are stacked on each other to form the privacy display module PD3, and the first hollow portion 120v, the second hollow portion 110v and The third hollow portions 320v are stacked on each other and connected to each other to form a hollow area TH3 that penetrates the privacy display module PD3. The light sensing device 140 overlaps the hollow area TH3 in a plan view, and the light sensing device 140 is disposed in the hollow area. In area TH3 (Figure 11). Since the second privacy protection structure 320 has the third hollow portion 320v, the second privacy protection structure 320 does not have any film layer or structure of the second privacy protection structure 320 in the area where the third hollow portion 320v is located.

Optionally, as shown in FIG. 11 , the second anti-peeping structure 320 may further include a touch sensing element 160 . The second privacy protection structure 320 may be an embedded touch sensing privacy protection structure 320T, and the touch sensing element 160 may be disposed on the upper surface of the fourth light control substrate 328 of the second privacy protection structure 320 . In the display device 300 , the touch sensing element 160 is disposed between the fourth light control substrate 328 of the second privacy protection structure 320 and the cover 130 , but is not limited thereto. In some embodiments, the touch sensing element 160 may be disposed on the second privacy junction. between the third light control substrate 322 and the fourth light control substrate 328 of the structure 320 to form an in-cell touch sensing privacy protection structure. The touch sensing element 160 may include a plurality of touch sensing electrodes 162, and the touch sensing electrodes 162 may be arranged according to requirements to serve as a touch sensing unit. The touch sensing element 160 and the touch sensing electrode 162 in this embodiment are similar to the touch sensing element 160 and the touch sensing electrode 162 in the second embodiment, and will not be described again.

FIG. 12 is a schematic cross-sectional view of a display device according to a modified embodiment of the third embodiment of the present invention. FIG. 13 is a schematic cross-sectional view of a display device according to another modified embodiment of the third embodiment of the present invention. The top schematic views of these two modified embodiments are similar to Figure 9, and Figures 12 and 13 are schematic cross-sectional views along the C-C' line of Figure 9. As shown in FIGS. 11 to 13 , the difference between these two modified embodiments and the fourth embodiment lies in the relative positions of the first privacy protection structure 120 , the display panel 110 and the second privacy protection structure 320 . As shown in FIG. 11 , in the third embodiment, the display panel 110 is located between two privacy structures (ie, the first privacy structure 120 and the second privacy structure 320 ). As shown in FIGS. 12 and 13 , the two privacy-preventing structures (i.e., the first privacy-preventing structure 120 and the second privacy-preventing structure 120 ) of any one of the two modified embodiments (i.e., the display devices 300A and 300B) Structure 320) is located on the same side of the display panel 110. For example, the first privacy protection structure 120 and the second privacy protection structure 320 are both located on the light incident side of the display panel 110 (as shown in Figure 12, the first privacy protection structure 120 and the second privacy protection structure 320 are located on the backlight module. 150 and the display panel 110), or the first anti-peep structure 120 and the second anti-peep structure 320 are both located on the light exit side of the display panel 110 (as shown in Figure 13, the display panel 110 is located between the backlight module 150 and the first between the privacy protection structure 120, and the first privacy protection structure 120 is located between the display panel 110 and the second privacy protection structure 320). In these two modified embodiments, the first hollow portion 120v of the first privacy protection structure 120, the second hollow portion 110v of the display panel 110, and the third hollow portion 320v of the second privacy protection structure 320 are in the direction Z. overlap. The light sensing device 140 overlaps the first hollow portion 120v, the second hollow portion 110v, and the third hollow portion 320v in a plan view, and the light sensing device 140 may be located in the first hollow portion 120v, 110v, and 320v in a plan view. The second hollow portion 110v and the third hollow portion 320v are in the middle. In FIGS. 12 and 13 , the light sensing device 140 is provided in the first hollow portion 120v, the second hollow portion 110v, and the third hollow portion 320v, but is not limited thereto. As shown in FIGS. 12 and 13 , the light sensing device 140 passes through the first hollow portion 120v, the second hollow portion 110v, and the third hollow portion 320v, but is not limited thereto. Specifically, in these two modified embodiments, the display panel 110, the first privacy structure 120 and the second privacy structure 320 are stacked on each other to form the privacy display module PD3A or PD3B. The hollow portion 110v and the third hollow portion 320v are stacked on each other and connected to each other to form a hollow area TH3A that penetrates the privacy display module PD3A or a hollow area TH3B that penetrates the privacy display module PD3B. The light sensing device 140 is viewed from above. Overlapping the hollow area TH3A or TH3B, and the light sensing device 140 is disposed in the hollow area TH3A or TH3B (see Figure 12 and Figure 13).

Furthermore, in this embodiment and variations of this embodiment, the first hollow portion 120v of the first privacy protection structure 120, the second hollow portion 110v of the display panel 110, and the third portion of the second privacy protection structure 320 are The shape of the hollow portion 320v can also be changed into a perforation similar to that shown in Figure 5 and Figure 7 , which will not be described again here.

Please refer to FIGS. 14 to 17 . FIG. 14 shows a top view of a display device according to a fourth embodiment of the present invention. FIG. 15 shows a display panel, a first anti-peep structure and a light sensor according to a fourth embodiment of the present invention. A schematic three-dimensional view of the device. Figure 16 is a schematic cross-sectional view along the DD' line in Figure 14 . Figure 17 is a cross-section of the display panel at the light sensing portion of the display device according to the fourth embodiment of the present invention. Schematic diagram. In order to simplify the diagram, FIG. 16 omits the detailed structure of the display panel 110 (such as the first substrate 112, the second substrate 118, the circuit element layer 114 and the display medium layer 116), and the display panel 110 of this embodiment has For relevant description, please refer to the first embodiment. As shown in FIGS. 14 to 17 , the difference between this embodiment and the first embodiment lies in the design of the display panel 110 of this embodiment. In the display device 400, the display panel 110 does not have a hollow portion, and the first privacy structure 120 has a first hollow portion 120v. The light sensing device 140 overlaps the display panel 110 and the first hollow portion 120v in a plan view. The light sensing device 140 is located in the first hollow portion 120v in a plan view, and the light sensing device 140 is disposed in the first hollow portion 120v (see Figure 16). As shown in FIG. 16 , the light sensing device 140 passes through the first hollow portion 120v, but is not limited thereto. The display panel 110 has a light sensing portion 110s corresponding to the light sensing device 140 (that is, the light sensing portion 110s of the display panel 110 overlaps the light sensing device 140 in the direction Z), and the light sensing portion of the display panel 110 110s is located between the light sensing device 140 and the cover 130 .

Under this design, when the light sensing device 140 performs light sensing, the external light can be received by the light sensing device 140 without passing through the first anti-peep structure 120 , so that the light sensing device 140 can receive External light with stronger light intensity can further improve the shooting and sensing effects of the light sensing device 140 .

In some embodiments, the light sensing part 110s can always be in a transparent state, so that the light sensing device 140 receives external light, but it is not limited to this.

In some embodiments, the light sensing portion 110s of the display panel 110 can adjust its transparency (light transmittance) accordingly according to requirements. For example, when the light sensing device 140 is activated (eg, the light sensing device 140 performs sensing), the light sensing portion 110s of the display panel 110 may be in a transparent state, so that the light sensing device 140 receives light with a relatively high intensity. High external light; when the light sensing device 140 is turned off (eg, the light sensing device 140 does not sense), the light sensing portion 110s of the display panel 110 can be in a fogged state or an opaque state to shield the light sensing device 140 ( (such as the photographic lens cannot capture the image), but this is not a limitation.

In the display panel 110, the structure in the light sensing part 110s may be the same as or different from the structure of other parts. For example, the display medium layer (such as the liquid crystal layer) of the display panel 110 is disposed in the light sensing portion 110s and other parts (such as the display area 110D and part of the peripheral area 110P) of the display panel 110 (ie, the light sensing portion 110s The structure of the display medium layer in is the same as the structure of the display medium layer in other parts of the display panel 110), and the display medium layer in the light sensing portion 110s of the display panel 110 (or can be called the light sensing portion medium layer) It is always in a transparent state so that the light sensing device 140 can receive external light, but is not limited to this.

In some embodiments, as shown in Figure 17, the light sensing part 110s has a first electrode 414a, a second electrode 414b and a light sensing part dielectric layer 416, which are disposed between the first substrate 112 and the second substrate 118, wherein Electrical signals are applied to the first electrode 414a and the second electrode 414b respectively to adjust the transparency of the light sensing part dielectric layer 416. For example, the light sensing part dielectric layer 416 may be disposed between the first electrode 414a and the second electrode 414b in the direction Z, but is not limited thereto. For example, the first electrode 414a and the second electrode 414b may include transparent conductive materials (such as indium tin oxide or other conductive materials with high transmittance), but are not limited thereto.

The material of the light sensing part dielectric layer 416 can be designed according to requirements. In some embodiments, the light sensing portion dielectric layer 416 may include any suitable liquid crystal material. For example, the light sensing portion dielectric layer 416 may include polymer dispersed liquid crystal (PDLC), polymer network liquid crystal (PNLC), other suitable materials, or combinations thereof. In this case, when the first electrode 414a and/or the second electrode 414b is floating, the light sensing part dielectric layer 416 is in a scattering state, and the light sensing part dielectric layer 416 may have low transparency or be in an atomized state; when When there is a voltage difference greater than zero between the first electrode 414a and the second electrode 414b, the light sensing part dielectric layer 416 is in a transparent state, so that the light sensing device 140 can receive external light with higher light intensity.

In some embodiments, the light sensing portion dielectric layer 416 may include electrochromic material. In this case, when there is a voltage difference between the first electrode 414a and the second electrode 414b, the light sensing part dielectric layer 416 may have a low transparency color, so that the light sensing part dielectric layer 416 may shield the light sensing part. Device 140; when there is another voltage difference between the first electrode 414a and the second electrode 414b, the light sensing part dielectric layer 416 can have high transparency, so that the light sensing device 140 can receive external light.

Please refer to FIG. 18 , which is a three-dimensional schematic diagram of a display panel, a first anti-peep structure and a light sensing device according to a variation of the fourth embodiment of the present invention. As shown in FIG. 18 , the difference between this modified embodiment and the fourth embodiment lies in the shape of the hollow portion. In the display device 400A shown in FIG. 18 , the shape of the first hollow portion 120v of the first anti-peep structure 120 is a perforation, which will not be described again here.

Please refer to Figures 19 to 21. Figure 19 is a schematic top view of a display device according to a fifth embodiment of the present invention. Figure 20 shows a display panel, a first anti-peep structure, a second anti-peep structure and a second anti-peep structure according to the fifth embodiment of the present invention. A schematic three-dimensional view of the structure and the light sensing device is shown in FIG. 21 , which is a schematic cross-sectional view along the EE′ line in FIG. 19 . In order to simplify the diagram, FIG. 21 omits the detailed structure of the display panel 110 (such as the first substrate 112, the second substrate 118, the circuit element layer 114 and the display medium layer 116), and the display panel 110 of this embodiment has For relevant description, please refer to the first embodiment. As shown in Figures 19 to 21, the difference between this embodiment and Figure 12 is that The design of the display panel 110 in this embodiment. In the display device 500, the display panel 110 does not have a hollow portion, and the first privacy protection structure 120 and the second privacy protection structure 320 have a first hollow portion 120v and a third hollow portion 320v respectively. The light sensing device 140 overlaps the display panel 110, the first hollow portion 120v of the first privacy protection structure 120, and the third hollow portion 320v of the second privacy protection structure 320 in a plan view. The light sensing device 140 is located in the first hollow part 120v and the third hollow part 320v in a plan view, and the light sensing device 140 is disposed in the first hollow part 120v and the third hollow part 320v (as shown in Figure 21 ). Specifically, in this embodiment, the first privacy structure 120 and the second privacy structure 320 are stacked on each other to form the privacy module PM, and the first hollow portion 120v and the third hollow portion 320v are stacked on each other and connected to each other. A hollow area TH5 is formed that penetrates the privacy module PM. The light sensing device 140 overlaps the hollow area TH5 in a plan view, and the light sensing device 140 is disposed in the hollow area TH5 (as shown in FIG. 21 ). The display panel 110 has a light sensing portion 110s corresponding to the light sensing device 140 (that is, the light sensing portion 110s of the display panel 110 overlaps the light sensing device 140 in the direction Z), and the light sensing portion of the display panel 110 110s is located between the light sensing device 140 and the cover 130 . The light sensing part 110s of this embodiment is similar to the light sensing part 110s of the fourth embodiment, and will not be described again here.

In addition, in a variation of this embodiment, the shapes of the first hollow portion 120v of the first privacy protection structure 120 and the third hollow portion 320v of the second privacy protection structure 320 may be similar to those of FIGS. 5 and 7 Perforation will not be described in detail here.

It should be noted that in the above-mentioned first to fifth embodiments and modified embodiments, the display device may further include one or more polarizers (not shown), which overlap the display panel and the privacy-preventing structure, and at least A polarizer has a hollow portion. The hollow portion of the polarizer overlaps the hollow portion of the privacy protection structure and the hollow portion of the display panel in a plan view (such as overlapping the first hollow portion of the first privacy protection structure 120 in the first and second embodiments). 120v and the second hollow portion 110v of the display panel 110, or in the third embodiment and its modified embodiments, the first hollow portion 120v and the second hollow portion of the display panel 110 overlap the first privacy structure 120. 110v and the third hollow portion 320v of the second privacy protection structure 320), or the hollow portion of the polarizer overlaps the hollow portion of the privacy protection structure (such as overlapping the first privacy protection structure 120 in the fourth embodiment). The first hollowed out part is 120v, or the In the fifth embodiment, the first hollow portion 120v of the first privacy protection structure 120 and the third hollow portion 320v of the second privacy protection structure 320 are overlapped.

Please refer to Figures 22 and 23. Figure 22 shows a schematic cross-sectional view of the display device with a collimated backlight module of the present invention in the first state. Figure 23 shows a schematic cross-section of the display device with a collimated backlight module of the present invention. A schematic cross-sectional view of the display device in the second state. The backlight module 150 of this invention can optionally be a collimated backlight module to emit collimated light. The following description takes the backlight module 150 of the display device 100 of the first embodiment or the display device 400 of the fourth embodiment as a collimated backlight module as an example. However, the collimated backlight module can be applied to the present invention. Any embodiments of the display device of the backlight module will not be described again here. Next, the first light control medium layer 126 of the first privacy structure 120 of the display device 100 of the first embodiment or the display device 400 of the fourth embodiment includes a polymer liquid crystal layer (eg, includes a polymer dispersed liquid crystal and Polymer network type liquid crystal) will be explained as an example. As shown in FIG. 22 , collimated backlight (eg, collimated light Lc) is injected into the first privacy-preventing structure 120 . When the first privacy-preventing structure 120 is in the first state (sharing state), the first privacy-preventing structure 120 When the polymer liquid crystal layer is in a scattering state, the first privacy-preventing structure 120 can diffuse the collimated light Lc so that the light emitted from the first privacy-preventing structure 120 is scattered light Ld, so that the display device 100 or 400 has the first Viewing angle range VA1 (as shown in Figure 4, the user can view the display device 100 or 400 within the first viewing angle range VA1). As shown in FIG. 23 , the collimated backlight (eg, collimated light Lc) is injected into the first privacy-preventing structure 120 . When the polymer liquid crystal layer of the first privacy-preventing structure 120 is in the second state (the privacy state or the privacy state) ), the polymer liquid crystal layer of the first anti-peep structure 120 is in a transparent state, so that the light passing through the first anti-peep structure 120 is still collimated light Lc or approximately collimated light Lc, so that the display device 400 has the third Two viewing angle range VA2 (as shown in Figure 4, the user can view the display device 100 or 400 in the second viewing angle range VA2). In this creation, the first perspective range VA1 is larger than the second perspective range VA2.

To sum up, since the light sensing device of the present invention is arranged in the hollowed out part, the light sensing device can receive external light with strong light intensity, thereby improving the shooting and sensing effects of the light sensing device. .

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this creation shall be included in the scope of protection of this creation.

100:Display device

110:Display panel

110T:Touch sensing panel

110v: The second hollowing part

112: First substrate

114:Circuit component layer

116: Display media layer

118:Second substrate

120: The first privacy protection structure

120v: The first hollowing part

122: First light control substrate

124a: First light control electrode

124b: Second light control electrode

126: First light control medium layer

128: Second light control substrate

130:Cover

130a: Lower surface

130b: Upper surface

140:Light sensing device

150:Backlight module

160:Touch sensing element

162:Touch sensing electrode

PD1: Anti-peep display module

TH1: Hollowed out area

X,Y,Z: direction

Claims (22)

A display device includes: a display panel; a first privacy-preventing structure disposed on one side of the display panel and overlapping each other, wherein the first privacy-preventing structure has a first hollow portion; and a light sensor A detection device overlaps the first hollow portion of the first anti-peep structure in a plan view. The display device according to claim 1, wherein the light sensing device is disposed in the first hollow portion of the first privacy-preventing structure. The display device of claim 1, wherein the display panel has a second hollow portion, and the second hollow portion overlaps the first hollow portion of the first privacy-preventing structure in a plan view. part and the light sensing device. The display device of claim 3, wherein the first hollow portion of the first privacy structure and the second hollow portion of the display panel are stacked on each other to form a hollow area, and the The light sensing device is arranged in the hollowed area. The display device according to claim 1, further comprising a cover, and the display panel and the first anti-peeping structure are disposed on a first side of the cover. The display device according to claim 5, wherein the display panel is disposed between the first privacy-preventing structure and the cover plate. The display device according to claim 5, wherein the first privacy-preventing structure is provided between the display panel and the cover. The display device according to claim 1, further comprising a second privacy protection structure overlapping the display panel and the first privacy protection structure. The display device of claim 8, wherein the display panel is disposed between the first privacy structure and the second privacy structure, or between the first privacy structure and the second privacy structure. The viewing structure is located on the same side of the display panel. The display device of claim 8, wherein the second privacy-preventing structure has a third hollow portion, and the third hollow portion overlaps the third portion of the first privacy-preventing structure in a plan view. a hollowed-out portion and the light sensing device. The display device of claim 10, wherein the first privacy-preventing structure and the second privacy-preventing structure are located on the same side of the display panel, and the first hollow of the first privacy-preventing structure The first portion and the third hollow portion of the second anti-peeping structure are stacked on each other to form a hollow area, and the light sensing device is disposed in the hollow area. The display device of claim 10, wherein the display panel has a second hollow portion, and the second hollow portion overlaps the first hollow portion of the first privacy-preventing structure in a plan view. part, the third hollow part of the second anti-peeping structure and the light sensing device. The display device of claim 12, wherein the first hollow portion of the first privacy-preventing structure, the second hollow portion of the display panel, and the second hollow portion of the second privacy-preventing structure The third hollow parts are stacked on each other to form a hollow area, and the light sensing device is disposed in the hollow area. The display device according to claim 1, further comprising a backlight module, wherein the first privacy-preventing structure is disposed between the backlight module and the display panel, or the display panel is disposed on the between the backlight module and the first anti-privacy structure. The display device according to claim 14, wherein the backlight module is a collimated backlight module. The display device of claim 15, wherein the first privacy-preventing structure is disposed between the backlight module and the display panel, and the first privacy-preventing structure includes a polymer liquid crystal layer, wherein when the When the polymer liquid crystal layer is in a scattering state, the display device has a first viewing angle range; when the polymer liquid crystal layer is in a transparent state, the display device has a second viewing angle range, and the first viewing angle range is greater than The second viewing angle range. The display device of claim 1, wherein the first anti-peep structure includes a first light control substrate, a second light control substrate, a light control medium layer, a first light control electrode and a second light control substrate. Control electrode, the light control medium layer is located between the first light control substrate and the second light control substrate, the first light control electrode is located between the first light control substrate and the light control medium layer between the second light control electrode and the second light control substrate and the light control medium layer. The display device of claim 17, wherein when there is a first voltage difference between the first light control electrode and the second light control electrode, the first privacy-preventing structure is in a first state, And the display device has a first viewing angle range; when there is a second voltage difference between the first light control electrode and the second light control electrode, the first anti-peep structure is in a second state. , and the display device has a second viewing angle range, wherein the first viewing angle range is greater than the second viewing angle range, and the absolute value of the first voltage difference is different from the absolute value of the second voltage difference. The display device of claim 17, wherein when at least one of the first light control electrode and the second light control electrode is floating, the first privacy-preventing structure is in a first state, and the first light control electrode is in a first state. The display device has a first viewing angle range; when there is a voltage difference between the first light control electrode and the second light control electrode, the first anti-peep structure is in a second state, and the The display device has a second viewing angle range, wherein the first viewing angle range is larger than the second viewing angle range. The display device of claim 17, wherein the first privacy-preventing structure further includes two alignment films, one of which is disposed between the first light control electrode and the light control medium layer. between them, and the other alignment film is disposed between the second light control electrode and the light control medium layer. The display device according to claim 1, wherein the shape of the first hollow portion in plan view is a perforation or a groove. The display device of claim 1, wherein the light sensing device is a photographic lens.

Images