Display device

Abstract

The present disclosure provides a display device. The display device includes a display unit, a transparency control unit, and a driving circuit. The driving circuit is coupled to the display unit and the transparency control unit, wherein the driving circuit drives the display unit and the transparency control unit in different modes. Therefore, the display device of the present disclosure can provide a transparent display function.

Description

Technical Field

[0001] The present disclosure relates to a display technology, and more particularly to a transparent display device. Background Art

[0002] The transparent display can allow background ambient light to penetrate when displaying an image, so that the image to be displayed and the background image can be viewed by the user at the same time.

[0003] When displaying image content, if the background image brightness is too high, the contrast of the main image may be reduced, or the feature edges of the main image may be blurred. Therefore, the transparent area corresponding to the main image needs to be properly controlled to improve the display quality of the image. Summary of the invention

[0004] The present disclosure provides a transparent display device with different driving modes.

[0005] According to an embodiment of the present disclosure, a display device includes a display unit, a transparency control unit, and a driving circuit. The driving circuit is coupled to the display unit and the transparency control unit, wherein the driving circuit drives the display unit and the transparency control unit in different modes.

[0006] Based on the above, the display device disclosed in the present invention can drive the display unit and the transparency control unit in different modes to enhance the display effect of the transparent display device.

[0007] The present disclosure can be understood by referring to the following detailed description in conjunction with the accompanying drawings. It should be noted that in order to facilitate the understanding of the readers and for the simplicity of the drawings, the multiple drawings in the present disclosure only depict a portion of the display device, and the specific components in the drawings are not drawn according to the actual scale. In addition, the number and size of each component in the drawings are only for illustration and are not intended to limit the scope of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The accompanying drawings are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure.

[0009] Figure 1 A block diagram of a display device according to an embodiment of the present disclosure;

[0010] Figure 2 A flowchart of a method for driving a display device according to an embodiment of the present disclosure;

[0011] Figure 3 A side view schematic diagram of adjusting the transmittance or the light intensity of the display light according to an embodiment of the present disclosure;

[0012] Figure 4 A schematic diagram of a display device in hybrid display according to an embodiment of the present disclosure;

[0013] Figure 5A A schematic diagram of a display device in a display mode according to an embodiment of the present disclosure;

[0014] Figure 5B A schematic diagram of a display device in a transparent mode according to an embodiment of the present disclosure;

[0015] Fig. 6A It is a schematic top view of a panel structure of a display device according to an embodiment of the present disclosure;

[0016] Figure 6B For the purpose of disclosure Fig. 6A A schematic cross-sectional view of the configuration of a display unit and a transparency control unit of an embodiment;

[0017] Fig. 7A It is a top view schematic diagram of a panel structure of a display device according to another embodiment of the present disclosure;

[0018] Figure 7B For the purpose of disclosure Fig. 7A A schematic cross-sectional view of the configuration of a display unit and a transparency control unit according to an embodiment.

[0019] Description of Figure Numbers

[0020] 100, 300, 400, 500, 600: display device;

[0021] 101, 102: driving signal;

[0022] 110, 630, 640: driving circuit;

[0023] 120, 610, 710: display unit;

[0024] 130, 620, 720: transparency control unit;

[0025] 301, 301': ambient light;

[0026] 302, 402, 404, 502, 504: display light;

[0027] 303, 303', 303", 403, 405, 503, 505: penetrating light;

[0028] 410, 511, 512: image content;

[0029] 420, 521, 522, 523: background image;

[0030] 450, 550: viewers;

[0031] 600A, 600B, 700A: display panel;

[0032] 601: wire;

[0033] 611, 621, 711: upper substrate;

[0034] 612, 622, 712: lower base plate;

[0035] 613, 624, 713: encapsulation layer;

[0036] 614, 714: flat layer;

[0037] 615, 625, 715: passivation layer;

[0038] 616, 624, 716: gate insulation layer;

[0039] 617, 623, 626, 717: spacer layer;

[0040] 618, 718: display unit;

[0041] 618_1, 718_1: upper electrode;

[0042] 618_2, 718_2: light-emitting layer;

[0043] 618_3, 718_3: lower electrode;

[0044] 618_4, 718_4: through hole;

[0045] 619, 628, 719, 728: control transistors;

[0046] 619_11, 628_11, 719_11, 728_11: source;

[0047] 619_12, 628_12, 719_12, 728_12: drain;

[0048] 619_2, 628_2, 719_2, 728_2: gate;

[0049] 619_3, 628_3, 719_3, 728_3: semiconductor layer;

[0050] 619_4, 628_4, 719_4, 728_4: light shielding layer;

[0051] 627, 727: transparent part;

[0052] 6271, 7271, 7272: electrode layer;

[0053] 6272: shared electrode layer;

[0054] 6273, 7273: dielectric layer;

[0055] 650: adhesive layer;

[0056] x, y, z: direction;

[0057] AA: Display blocks;

[0058] S1: display side;

[0059] S2: dorsal;

[0060] S210~S260: steps;

[0061] S310~S330: Situation. DETAILED DESCRIPTION

[0062] Certain words are used throughout this disclosure and in the appended claims to refer to specific components. Those skilled in the art will appreciate that display device manufacturers may refer to the same components by different names. This document does not intend to distinguish between components that have the same function but different names. In the following description and claims, the words "including" and "comprising" are open-ended words and should therefore be interpreted as "including but not limited to..."

[0063] Directional terms mentioned herein, such as "up", "down", "front", "back", "left", "right", etc., are only with reference to the directions of the accompanying drawings. Therefore, the directional terms used are for illustration and not for limiting the present disclosure. In the accompanying drawings, each figure shows the general characteristics of the methods, structures and / or materials used in a particular embodiment. However, these drawings should not be interpreted as defining or limiting the scope or nature covered by these embodiments. For example, for clarity, the relative size, thickness and position of each film layer, region and / or structure may be reduced or enlarged.

[0064] When a corresponding component such as a film layer or region is referred to as being "on another component", it may be directly on the other component, or other components may exist between the two. On the other hand, when a component is referred to as being "directly on another component", there is no component between the two. In addition, when a component is referred to as being "on another component", the two have a top-down relationship in a top-down direction, and the component may be above or below the other component, and this top-down relationship depends on the orientation of the device.

[0065] In some embodiments of the present disclosure, terms such as "connection" and "interconnection" may refer to two structures being in direct contact with each other, or may refer to two structures not being in direct contact with each other, with other structures disposed between the two structures, unless otherwise specified. Such terms may also include situations where both structures are movable or both structures are fixed. In addition, the term "coupling" includes any direct and indirect electrical connection means.

[0066] Ordinal numbers such as "first" and "second" used in the specification and claims are used to modify components. They do not imply or represent that the component or components have any previous ordinal numbers, nor do they represent the order of one component and another component, or the order of the manufacturing method. The use of these ordinal numbers is only used to make a component with a certain name clearly distinguishable from another component with the same name. The same words may not be used in the claims and the specification. Accordingly, the first component in the specification may be the second component in the claims.

[0067] It is understood that the following embodiments may replace, reorganize, or mix the technical features in several different embodiments to implement other embodiments without departing from the spirit of the present disclosure.

[0068] Figure 1 FIG. 1 is a block diagram of a display device according to an embodiment of the present disclosure. Figure 1 The display device 100 includes a driving circuit 110, a display unit 120, and a transparency control unit 130. The driving circuit 110 is coupled to the display unit 120 and the transparency control unit 130. In the present embodiment, the display unit 120 may include, for example, a liquid crystal (Liquid Crystal), an organic light emitting diode (Organic Light Emitting Diode, OLED), an inorganic light emitting diode (Inorganic Light Emitting Diode, LED), a sub-millimeter light emitting diode (Mini-LED), a micro light emitting diode (Micro-LED), a quantum dot (Quantum Dot, QD), a quantum dot diode (QLED / QDLED), electrophoresis (Electro-Phoretic), fluorescence (Fluorescence), phosphorescence (Phosphor), other suitable materials or a combination of the above materials, but the present disclosure is not limited thereto. The transparency control unit 130 may include, for example, an electrochromic (Electro Chromic, EC) component or a liquid crystal (Liquid crystal) and other materials, but the present disclosure is not limited thereto.

[0069] In the present embodiment, the driving circuit 110 drives the display unit 120 and the transparency control unit 130 in different modes, wherein “different modes” refers to, for example, providing different signals, and the signals may include, for example, voltage signals, current signals, grayscale numbers, or refresh rates, but are not limited thereto. For example, the driving circuit 110 provides a driving signal 101 to the display unit 120 and the driving circuit 110 provides a driving signal 102 to the transparency control unit 130 to drive the display unit 120 and the transparency control unit 130. The driving signal 101 is different from the driving signal 102. In other words, the pixel unit type of the display unit 120 is different from the transparency control unit 130, so the display unit 120 and the transparency control unit 130 are driven by different driving signals. For example, if the display unit 120 is a pixel unit including an organic light emitting diode, and the transparency control unit 130 is a pixel unit including a liquid crystal, the display unit 120 is driven in a current mode, and the transparency control unit 130 is driven in a voltage mode. In other words, the driving signal 101 provided by the driving circuit 110 to the display unit 120 is a current signal, and the driving signal 102 provided to the transparency control unit 130 is a voltage signal, but the disclosure is not limited thereto.

[0070] In some embodiments, the driving signal 101 and the driving signal 102 may be signals with different grayscale numbers. For example, since the display unit 120 is used to display an image, the driving signal 101 may provide a first grayscale number to the display unit 120. The first grayscale number is, for example, a grayscale signal with 256 kinds of grayscales, so the display unit 120 may have 256 kinds of grayscales to display a more refined image screen. Since the transparency control unit 130 is used to present a transparent or non-transparent visual effect, the driving signal 102 may provide a second grayscale number to the transparency control unit 130. The second grayscale number is, for example, a grayscale signal with 2 kinds of grayscales, so the transparency control unit 130 may have 2 kinds of grayscales to indicate a transparent or non-transparent state. The transparent state may be, for example, that a viewer can see a scene or an object on the other side of the display device 100 from one side of the display device 100 through the transparency control unit 130. The non-transparent state may be, for example, that the viewer cannot see the scene or object on the other side of the display device 100 through the transparency control unit 130 from one side of the display device 100, or the viewer cannot clearly see the scene or object on the other side of the display device 100 through the transparency control unit 130 from one side of the display device 100. Specifically, the display device 100 may include a plurality of display units 120 and a plurality of transparency control units 130. The display device 100 may display an image by driving part of the display units 120, and provide a non-transparent display effect at a position overlapping with the display unit 120 displaying the image through a part of the transparency control unit 130, and provide a transparent display effect at a position of other display units 120 not in the image through another part of the transparency control unit 130. Therefore, the display device 100 of this embodiment can provide a transparent display effect with a high contrast. In other embodiments, the position of the display unit 120 displaying the image can also provide a transparent display effect through a part of the transparency control unit 130, so that the viewer can view the image and the object behind the display device at the same time.

[0071] However, the driving signal 101 and the driving signal 102 disclosed herein are not limited to the above-mentioned grayscale numbers. In other embodiments, the driving signal 101 may include a signal greater than or less than 256 grayscale numbers, and the driving signal 102 may include a signal greater than 2 grayscale numbers, but is not limited thereto. In this regard, in one embodiment, the display unit 120 can be driven with a first grayscale number, and the transparency control unit 130 can be driven with a second grayscale number, wherein the first grayscale number is different from the second grayscale number. In some embodiments, the first grayscale number is greater than the second grayscale number. In addition, in another embodiment, the display unit 120 and the transparency control unit 130 can also be driven with different refresh rates, respectively. For example, the display unit 120 can be driven with a higher refresh rate, such as 240 Hz, to provide a good display effect. Furthermore, compared to the display unit 120, since the transparency control unit 130 is mainly used to present a transparent or non-transparent visual effect, the transparency control unit 130 can be driven at a lower refresh rate, such as 1 Hz, so as to achieve power saving and effectively provide a good transparent or non-transparent visual effect, but the present disclosure is not limited to this.

[0072] In some embodiments, the driving timings between the display unit 120 and the transparency control unit 130 may correspond to each other. For example, the turn-on time of the display unit 120 may be the same as the turn-on time of the transparency control unit 130, or the display unit 120 and the transparency control unit 130 may be turned on at approximately the same time point.

[0073] Figure 2 FIG. 1 is a flow chart of a driving method of a display device according to an embodiment of the present disclosure. Figure 1 as well as Figure 2 , Figure 1 The display device 100 may perform steps S210 to S260. It should be noted that: Figure 1The display device 100 may further include an ambient light sensing unit to sense the light intensity of the ambient light in real time, wherein the ambient light sensing unit may be configured outside or inside the display device 100, and the disclosure is not limited thereto. Moreover, the display device 100 may adjust the light intensity or transmittance of the display light of the display panel accordingly as the light intensity of the ambient light changes, so that the display device 100 can maintain a good display effect. The "light intensity" described in this case refers to the spectrum integral value of the light source (which may be, for example, display light or ambient light). In some embodiments, the light source may include visible light (for example, a wavelength between 380nm and 780nm) or ultraviolet light (for example, a wavelength less than 365nm), but is not limited thereto, that is, when the light source is visible light, the light intensity is the spectrum integral value within the wavelength range of 380nm to 780nm. The transmittance described in the disclosure refers to the percentage of the light intensity of the penetrating light measured after the ambient light penetrates the display device 100 divided by the light intensity measured when the ambient light does not penetrate the display device 100.

[0074] Based on the above conditions, the display device 100 can perform the following steps S210-S260. In step S210, the user can set a preset condition for the display device 100, wherein the preset condition can be, for example, a specific proportional relationship between the light intensity of the display light of the display device 100 and the light intensity of the penetrating light, and the following Figure 3 The embodiment will be described in detail. In step S220, the ambient light sensing unit of the display device 100 can obtain an ambient signal, such as a light intensity signal of the ambient light. In step S230, the driving circuit 110 determines whether the relationship between the light intensity of the penetrating light of the current display device 100 and the light intensity of the display light meets the preset condition. If so, in step S240, the driving circuit 110 does not adjust the transmittance or the light intensity of the display light. If not, in step S250, the driving circuit 110 adjusts at least one of the driving signal 101 used to drive the display unit 120 and the driving signal 102 used to drive the transparency control unit 130. In step S260, the display device 100 can adjust the transmittance through the transparency control unit 130 and adjust at least one of the light intensity of the display light through the display unit 120, so that the relationship between the light intensity of the penetrating light and the light intensity of the display light meets the predetermined preset condition.

[0075] The above-mentioned "intensity of the display light" can be designed and adjusted according to the needs of the designer. For example, different drive signals can be designed on the driver chip or the driver circuit to correspond to different intensities of the display light. For example, if the display device 100 requires a display light intensity of 100 nits, the driver chip or the driver circuit can provide a corresponding drive signal so that the display device 100 has a display light intensity of 100 nits. The above-mentioned "intensity of the penetrating light" can also be designed and adjusted according to the needs of the designer. For example, different drive signals can be designed on the driver chip or the driver circuit to correspond to different intensities of the penetrating light, and the drive signal can also correspond to the corresponding transmittance.

[0076] Therefore, the display device 100 of this embodiment can provide an automatic adjustment function for at least one of the display unit 120 and the transparency control unit 130 according to the relationship between the intensity of the ambient light and the intensity of the current display light and the intensity of the transmitted light, so that the display device 100 can automatically maintain a good display effect under different changes in ambient light. In addition, in one embodiment, Figure 1 The display device 100 may further include an input interface (not shown) and a control unit (not shown), so that the user can input a control command through the input interface and manually control the control unit to adjust at least one of the light intensity (e.g., the light intensity of the display light of the display unit 120) or the transmittance of the display device 100 according to the control command. In other words, the contrast of the image displayed by the display device 100 can also be manually set according to the user's preference or usage requirements.

[0077] Figure 3 A schematic side view of adjusting the transmittance or the light intensity of the display light according to an embodiment of the present disclosure. Figure 3 , you can continue the above Figure 2 The automatic adjustment means of the embodiment, Figure 3 Scenarios S310 to S320 are used to illustrate how the display device 100 of the present disclosure maintains the display effect of the display device 100 by adjusting the transmittance or the light intensity of the display light, wherein the above-mentioned default condition may be, for example, that the light intensity of the display light 302 is greater than or equal to twice the light intensity of the transmission light 303, but the present disclosure is not limited thereto. First, it is explained that Figure 3Direction x, direction y and direction z are marked. Direction z may be, for example, the direction of the display device 100 toward the viewer. Direction z may be perpendicular to direction x and direction y, and direction x may be perpendicular to direction y. Subsequent figures may describe the following embodiments based on direction x, direction y and direction x. In this regard, in scenario S310, the display device 300, for example, emits 200 nits of display light 302. The back side S2 of the display device 300 may, for example, receive 100 nits of ambient light 301, and the display device 300 may, for example, have a transparent display effect with a transmittance of 50%. Therefore, the display side S1 of the display device 300 may emit 50 nits of penetrating light 303, and the relationship between the light intensity of the penetrating light of the display device 300 and the light intensity of the display light meets the above-mentioned preset condition (200≥2×50). In other embodiments, the viewer may view the displayed image from the display side S1 or the back side S2 of the display device 300, but the present disclosure is not limited to this.

[0078] Incidentally, in a measurement scenario, the display device 300 of the present embodiment displays a fixed image. In this regard, in an environment where the light intensity of the ambient light is known, the fixed display block of the display device 300 can be measured to obtain the sum of the light intensity of the transmitted light and the light intensity of the display light. Then, in an environment where the ambient light is completely shielded, the light intensity of the display light can be measured separately for this fixed display block of the display device 300. Therefore, after subtracting the above two measurement results, the light intensity of the transmitted light can be obtained, and the relationship between the light intensity of the transmitted light and the light intensity of the display light of the array display device 300 can be obtained by adjusting the light intensity of the ambient light and then following the above measurement method, and then it can be inferred whether it meets the relationship. In addition, in an environment where the light intensity of the ambient light is known, the display unit and the transparent control unit in this fixed display block of the display device 300 can also be measured separately and independently to simultaneously measure the light intensity of the transmitted light and the light intensity of the display light, and the relationship between the light intensity of the transmitted light and the light intensity of the display light of the display device 300 can also be obtained.

[0079] Please continue to refer to Figure 3When the brightness of the environment changes, in scenario S320, the display device 300, for example, emits a display light 302 of 200 nits, and the back side S2 of the display device 300 may, for example, change to receive an ambient light 301' of 1000 nits. In this regard, if the display device 300 maintains a transparent display effect with a transmittance of 50%, the display side S1 of the display device 300 will emit a penetrating light 303' of 500 nits, so that the relationship between the light intensity of the penetrating light of the display device 300 and the light intensity of the display light will not meet the above-mentioned preset conditions (200<2×500), and the display effect of the display device 300 will be affected by the excessive brightness of the ambient light, resulting in poor contrast of the image displayed by the display device 300. Therefore, in scenario S330, the display device 300 may execute the above-mentioned Figure 2 The process is to automatically reduce the transmittance of the display device 300 to 10%. In this regard, the display side S1 of the display device 300 after the transmittance is automatically adjusted will emit 100 nits of transmitted light 303". Accordingly, the relationship between the light intensity of the transmitted light of the display device 300 after the transmittance is automatically adjusted and the light intensity of the display light will meet the above-mentioned preset condition (200≥2×100).

[0080] In addition, in one embodiment, the display device 300 may also increase the light intensity of the display light of the display device 300 in the scenario S330 so that the relationship between the light intensity of the penetrating light of the display device 300 and the light intensity of the display light after the automatic adjustment meets the above-mentioned preset conditions. Alternatively, the light intensity of the display light may be increased and the transmittance may be decreased simultaneously so that the relationship between the light intensity of the penetrating light of the display device 300 and the light intensity of the display light after the automatic adjustment meets the above-mentioned preset conditions, and is not limited to the above-mentioned method of adjusting the transmittance or adjusting the light intensity of the display light. In other embodiments, if the brightness of the ambient light is too high, even if the display device 300 automatically decreases the transmittance to the lowest transmittance and / or automatically increases the display light to the highest light intensity, the relationship between the light intensity of the penetrating light of the display device 300 and the light intensity of the display light after the automatic adjustment of the transmittance and / or the light intensity of the display light cannot meet the above-mentioned preset conditions, but the display device 300 will still automatically decrease the transmittance to the lowest transmittance and / or automatically increase the display light to the highest light intensity to achieve a good transparent display effect.

[0081] In other words, under different changes in ambient light intensity, if a display device has Figure 1 In the embodiment, the driving circuit 110 can drive the display unit 120 and / or the transparency control unit 130 in different driving modes to achieve the above Figure 2 or Figure 3If the light intensity or transmittance of the display light of the display panel is adjusted according to the above measurement method, the relationship between the light intensity of the transmitted light and the light intensity of the display light obtained by the display device according to the above measurement method will meet the above Figure 2 or Figure 3 The preset conditions described.

[0082] Figure 4 FIG. 1 is a schematic diagram of a display device in a hybrid display according to an embodiment of the present disclosure. Figure 4 The display device 400 may be similar to the above-mentioned Figure 1 The relevant internal units of the display device 100 are not described in detail. In this embodiment, the display device 400 can achieve a partially transparent and partially transparent display effect. Figure 4 , part of the display area AA of the display device 400 can be used to display the image content 410, and the part other than the image content 410 can be presented as a transparent state (for example, the display area AA other than the image content 410 has a higher transmittance), so that the background image light of the background image 420 behind the display device 400 can pass through the display device 400 at a higher ratio. In other words, the viewer 450 can clearly view the image content 410 and the background image 420 behind the display device 400 from the display device 400 of this embodiment at the same time.

[0083] In this embodiment, the display device 400 can adjust the transmittance of different display blocks of the display device 400 and the light intensity of the display light according to different display requirements. For example, the display block AA of the portion of the display device 400 corresponding to the image screen content 410 can be in the display mode. The display mode means that the light intensity of the display light 402 of the display block AA of the portion of the display device 400 displaying the image screen content 410 is greater than the light intensity of the penetrating light 403 (i.e., the transmittance of the display block AA of the portion displaying the image screen content 410 is lower), so that the image screen content 410 can be clearly displayed. In one embodiment, the light intensity of the penetrating light 403 of the display device 400 operating in the display mode divided by the light intensity of the display light 402 can be, for example, less than 1 or less than 0.5. However, the display block AA of another portion of the display device 400 corresponding to the background image 420 behind the display device 400 can be in the transparent mode. The transparent mode means that the light intensity of the transmitted light 405 of the display block AA of the other part of the display device 400 can be greater than the light intensity of the display light 404 (i.e., the transmittance of the display block AA of the other part other than the display image content 410 is higher), so that the background image light of the background image 420 behind the display device 400 can be transmitted through the display device 400 at a higher ratio and clearly displayed. In one embodiment, the light intensity of the transmitted light 405 of the display device 400 operating in the transparent mode divided by the light intensity of the display light 404 can be greater than 1 or greater than 2. In other words, different display blocks of the display device 400 of the present embodiment can drive the display unit and the transparency control unit in different modes according to specific display requirements, for example, different driving signals 101 are provided to drive the display unit and different driving signals 102 are provided to drive the transparency control unit, so that the display device 400 can have a display mode and a transparent mode at the same time to provide a good transparent display effect.

[0084] Figure 5A FIG. 1 is a schematic diagram of a display device in a transparent mode according to an embodiment of the present disclosure. Figure 5B It is a schematic diagram of a display device in a display mode according to an embodiment of the present disclosure. Figure 5A as well as Figure 5B The display device 500 may be similar to the above-mentioned Figure 1 The relevant internal units of the display device 100 are not described in detail. Figure 5A, if the current display requirement of the display device 500 is to present the entire image 521, 522, 523 behind the display device 500, then the entire display block AA of the display device 500 can be in transparent mode. The transparent mode means that the light intensity of the penetrating light 503 of the entire display block AA of the display device 500 can be much greater than the light intensity of the display light 502, so that the images 521, 522, 523 behind the display device 500 can all penetrate the display device 500 and be clearly viewed by the viewer 550 in front of the display device 500. Figure 5B , if the current display requirement of the display device 500 is that the images 521, 522, 523 behind the display device 500 are blocked, that is, the images 521, 522, 523 behind the display device 500 cannot be viewed by the viewer, and then all the image content 511, 512 are displayed, that is, the entire display block AA of the display device 500 can be in display mode. In this regard, the light intensity of the penetrating light 505 of the entire display block AA of the display device 500 can be much smaller than the light intensity of the display light 504, so that the viewer 550 in front of the display device 500 can clearly view all the image content 511, 512 displayed by the display device 500.

[0085] Fig. 6A It is a top view schematically showing a panel structure of a display device according to an embodiment of the present disclosure. Figure 6B For the purpose of disclosure Fig. 6A The cross-sectional diagram of the display unit and the transparency control unit of the embodiment. Fig. 6A , the display device 600 may be, for example, an on-cell panel architecture. The display device 600 includes two display panels 600A, 600B and driving circuits 630, 640, wherein the display panel 600A is stacked above the display panel 600B. For example, when viewed from the direction z, the display panel 600A and the display panel 600B at least partially overlap. In this embodiment, the display panel 600A includes a plurality of display units 610 arranged in an array, and the display panel 600B includes a plurality of transparency control units 620 arranged in an array. The display panels 600A and 600B are driven by different driving signals provided by driving circuits 630 and 640, respectively, and the driving circuit 630 and the driving circuit 640 can be coupled through a wire 601 so that the driving circuits 630 and 640 can be controlled and can provide driving signals 101 and driving signals 102 synchronously or separately to achieve the display effects of the above-mentioned embodiments. Specifically, the display device 600 can provide a driving signal 102 through the driving circuit 640 to control the transparency control unit 620 to determine the transmittance of the display device 600, that is, determine the degree of transparency of the image. In some embodiments, the driving circuit 630 and the driving circuit 640 can be regarded as the same driving circuit, but not limited thereto.

[0086] Next reference Figure 6B The cross-sectional structure of the display panels 600A and 600B is as follows: Figure 6B shown. Figure 6B A cross-sectional schematic diagram showing one display unit corresponding to one transparency control unit is depicted. One display unit 610 of the display panel 600A may be correspondingly disposed on one transparency control unit 620 of the display panel 600B. In other words, in the direction z, one display unit 610 may at least partially overlap one transparency control unit 620. In the present embodiment, the upper substrate 611 of the display panel 600A is oriented toward the display side S1 close to the display device 600, and the lower substrate 622 of the display panel 600B is oriented toward the back display side S1 away from the display device 600. In the present embodiment, an encapsulating layer 613, a planarization layer 614, a passivation layer 615, a gate insulating layer 616, and an interval layer 617 may be disposed between the upper substrate 611 and the lower substrate 612 of the display panel 600A. It is worth noting that the encapsulation layer 613, the planarization layer 614, the passivation layer 615, the gate insulating layer 616 and the spacer layer 617 of the present embodiment may be, for example, an insulating layer, and the insulating layer may also be a single layer or other multi-layer structure in some embodiments, and may, for example, include an organic material, an inorganic material or a combination thereof, and is not limited to Figure 6B shown.

[0087] In this embodiment, the display unit 610 includes a display portion 618 and a control transistor 619. The display portion 618 of the display unit 610 is disposed between the encapsulating layer 613 and the planarization layer 614, and the control transistor 619 of the display unit 610 is disposed between the passivation layer 615, the gate insulating layer 616 and the spacer layer 617. The display portion 618 may be, for example, an organic light emitting diode, and includes a portion of an upper electrode 618_1, a light emitting layer 618_2 and a lower electrode 618_3. The control transistor 619 may be, for example, a thin film transistor (TFT), and includes a source electrode 619_11, a drain electrode 619_12, a gate electrode 619_2, a semiconductor layer 619_3 and a light shielding layer 619_4. The light shielding layer 619_4 may be, for example, a metal material or other light shielding materials, and in some embodiments, the control transistor 619 may not be provided with the light shielding layer 619_4. The display unit 618 is electrically connected to the control transistor 619 through a through hole (Via hole) 618_4. It is worth noting that the control transistor 619 of the present embodiment is a top gate structure, but the present disclosure is not limited thereto. In one embodiment, the control transistor 619 may also be a bottom gate structure. In the present embodiment, the control transistor 619 is used to drive the display unit 618 according to the driving signal provided by the driving circuit 630. In this regard, the control transistor 619 can control the display unit 618 to generate display light or turn off the display unit 618.

[0088] In the present embodiment, an adhesive layer 650 is provided between the lower substrate 612 of the display panel 600A and the upper substrate 621 of the display panel 600B. The adhesive layer 650 may, for example, include a solid transparent optical adhesive (Optical Clear Adhesive, OCA) or a liquid transparent optical adhesive (Optical Clear Resin, OCR), and the present disclosure is not limited thereto. A spacer layer 623, a spacer layer 626, a gate insulating layer 624, and a passivation layer 625 are disposed between the upper substrate 621 and the lower substrate 622 of the display panel 600B. It is worth noting that the spacer layer 623, the spacer layer 626, the gate insulating layer 624, and the passivation layer 625 of the present embodiment may, for example, be an insulating layer, and the insulating layer may be a single layer or other multi-layer structure in some embodiments, and may include an organic material, an inorganic material, or a combination of the foregoing, and is not limited to Figure 6B shown.

[0089] In the present embodiment, any transparency control unit 620 in the display panel 600B may include a transparent portion 627 and a control transistor 628. The control transistor 628 of the transparency control unit 620 is disposed between the spacer layer 623, the gate insulating layer 624 and the passivation layer 625, and the transparent portion 627 of the transparency control unit 620 is disposed between the passivation layer 625 and the spacer layer 626. The transparent portion 627 may include an electrode layer 6271, a portion of a shared electrode layer 6272 and a portion of a dielectric layer 6273. The dielectric layer 6273 may include, for example, a liquid crystal material, but is not limited thereto. In addition, the electrode layers of different transparency units may be separated from each other, but may be formed by the same process. The control transistor 628 may be, for example, a thin film transistor, and includes a source 628_11, a drain 628_12, a gate 628_2, a semiconductor layer 628_3 and a light shielding layer 628_4. The drain 628_1 of the control transistor 628 is electrically connected to the electrode layer 6271 of the transparent portion 627. In the present embodiment, the control transistor 628 is used to drive the dielectric layer 6273 through the electrode layer 6271 and the shared electrode layer 6272 according to the driving signal provided by the driving circuit 640. In other words, the control transistor 628 can control the rotation angle of the liquid crystal in the dielectric layer 6273 of the part of the transparent portion 627 to present a transparent or non-transparent state. In addition, in the present embodiment, one display unit 610 corresponds to one transparency control unit 620, but the present disclosure is not limited thereto. In other embodiments, one display unit may also correspond to multiple transparency control units, or multiple display units may correspond to multiple transparency control units.

[0090] Fig. 7A FIG. 4 is a top view of a panel structure of a display device according to another embodiment of the present disclosure. Figure 7B For the purpose of disclosure Fig. 7A The cross-sectional diagram of the display unit and the transparency control unit of the embodiment. Fig. 7A, the display device 700 may be, for example, an in-cell panel architecture. The display device 700 includes a hybrid display panel 700A and a driving circuit 730. For example, the display device 700 is different from the above-mentioned display device 600 in that the display device 700 includes a display panel 700A, and the display panel 700A includes a plurality of display units 710 arranged in an array and a plurality of transparency control units 720. In the present embodiment, the driving circuit 730 drives the display unit 710 and the transparency control unit 720 in different modes, for example, the driving circuit 730 provides two different driving signals to respectively drive the display unit 710 and the transparency control unit 720 to achieve the display effects of the above-mentioned embodiments. Specifically, the display device 700 may provide a driving signal 102 through the driving circuit 730 to control the transparency control unit 720 to determine the transmittance of the display device 700, that is, to determine the degree of transparent display of the image screen.

[0091] It is worth noting that in Fig. 7A In the embodiment, the plurality of display units 710 and the plurality of transparency control units 720 may be, for example, arranged between the plurality of transparency control units 720 (the plurality of transparency control units 720 respectively arranged along the y direction) in two corresponding columns with the plurality of display units 710 in each column (the plurality of display units 710 arranged along the y direction), and the number of the plurality of display units 710 in each column is the same as the number of the plurality of transparency control units 720 in each column, but the present disclosure is not limited thereto. In one embodiment, the plurality of display units 710 and the plurality of transparency control units 720 may also be, for example, arranged between the plurality of transparency control units 720 in two corresponding columns with the plurality of display units 710 in each column, and the number of the plurality of display units 710 in each column is not the same as the number of the plurality of transparency control units 720 in each column. For example, one display unit 710 in a certain column is arranged between the plurality of transparency control units 720 in two adjacent columns, or the plurality of display units 710 in a certain column are arranged between the plurality of transparency control units 720 in two adjacent columns. In another embodiment, the plurality of display units 710 and the plurality of transparency control units 720 may also be, for example, arranged in a staggered manner one unit at a time. Alternatively, every four adjacent units form a pixel group, three of which may be display units 710, and the remaining unit may be arranged in a manner of transparency control unit 720. For example, three units in the first column and the second column of the first row and the first column of the second row are display units 710, and one unit in the second column of the second row is a transparency control unit 720. However, the aforementioned display units 710 and the arrangement order, arrangement form, and quantity ratio of the display units 710 may be designed accordingly according to different usage requirements in some other embodiments of the present disclosure.

[0092] Next reference Figure 7B The cross-sectional structure of the display panel 700A is as follows: Figure 7B shown. Figure 7B A cross-sectional schematic diagram showing one display unit corresponding to one transparency control unit is drawn. A display unit 710 and a transparency control unit 720 of the display panel 700A are disposed on a lower substrate 712 and may be arranged along the x-direction or the y-direction. In the present embodiment, the upper substrate 711 of the display panel 700A is close to the display side S1 of the display device 700, and the lower substrate 712 of the display panel 700A is away from the display side S1 of the display device 700. In the present embodiment, an encapsulation layer 713, a planarization layer 714, a passivation layer 715, a gate insulating layer 716, and a spacer layer 717 are disposed between the upper substrate 711 and the lower substrate 712 of the display panel 700A. It is worth noting that the encapsulation layer 713, the planarization layer 714, the passivation layer 715, the gate insulating layer 716, and the spacer layer 717 of the present embodiment may be, for example, an insulating layer, and the insulating layer may also be a single layer or other multi-layer structure in some embodiments, and may, for example, include an organic material, an inorganic material, or a combination thereof, and is not limited to Figure 7B shown.

[0093] In this embodiment, the display unit 710 includes a display portion 718 and a control transistor 719. The display portion 718 of the display unit 710 is disposed between the encapsulation layer 713 and the planar layer 714, and the control transistor 719 of the display unit 710 is disposed between the passivation layer 715, the gate insulating layer 716 and the spacer layer 717. The display portion 718 may be, for example, an organic light emitting diode, and includes a portion of an upper electrode 718_1, a light emitting layer 718_2 and a lower electrode 718_3. The control transistor 719 may be, for example, a thin film transistor, and includes a source 719_11, a drain 719_12, a gate 719_2, a semiconductor layer 719_3 and a light shielding layer 719_4. The light shielding layer 719_4 may be, for example, a metal material or other light shielding material, and in some embodiments, the control transistor 719 may not be provided with the light shielding layer 719_4. The display portion 718 and the control transistor 719 are electrically connected through a through hole 718_4. It is worth noting that the control transistor 719 of the present embodiment is an upper gate structure, but the present disclosure is not limited thereto. In one embodiment, the control transistor 719 may also be a lower gate structure. In the present embodiment, the control transistor 719 is used to drive the display portion 718 according to the driving signal provided by the driving circuit 730. In this regard, the control transistor 719 can control the display portion 718 to generate display light or turn off the display portion 718.

[0094] In the present embodiment, a control transistor 728 of the transparency control unit 720 is disposed between the passivation layer 715, the gate insulating layer 716, and the spacer layer 717, and a transparent portion 727 of the transparency control unit 720 is disposed between the encapsulation layer 713, the planar layer 714, the passivation layer 715, the gate insulating layer 716, and the spacer layer 717. The transparent portion 727 includes an electrode layer 7271, an electrode layer 7272, and a dielectric layer 7273. The dielectric layer 7273 may include, for example, a liquid crystal material, but is not limited thereto. The control transistor 728 may be, for example, a thin film transistor, and includes a source 728_11, a drain 728_12, a gate 728_2, a semiconductor 728_3, and a light shielding layer 728_4. In the present embodiment, the control transistor 728 is used to drive the liquid crystal in the dielectric layer 7273 through the electrode layer 7271 and the electrode layer 7272 according to another driving signal provided by the driving circuit 730. That is, the control transistor 728 can control the rotation angle of the liquid crystal in the dielectric layer 7273 of the transparent portion 727 to present a transparent or non-transparent state. It should be known that in this embodiment, the drain electrode 728_12 can be electrically connected to the electrode layer 7272. Figure 7B Not shown, but in the cross-sectional view of other regions, the drain electrode 728_12 can be connected to the electrode layer 7272 through a through hole, but the connection method is not limited thereto. In addition, in this embodiment, one display unit 710 corresponds to one transparency control unit 720, but the disclosure is not limited thereto. In other embodiments, one display unit may also correspond to multiple transparency control units, or multiple display units may correspond to multiple transparency control units.

[0095] In summary, the display device disclosed herein can effectively present a transparent display effect with high contrast by providing different driving modes or driving signals to the display unit and the transparency control unit. Alternatively, the display device disclosed herein can also provide a function of automatically or manually adjusting the light intensity or transmittance of the display light of the display device according to the brightness of the current ambient light, so that the display device can present a good transparent display effect in various scenarios with different brightness of the ambient light. Alternatively, the display device disclosed herein can also realize a method in which part of the display block is in display mode and another part of the display block is in transparent mode to provide a variety of transparent display effects.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A display device, characterized in that: Include: Display unit; Transparency control unit; A first driving circuit coupled to the display unit; as well as A second driving circuit is coupled to the transparency control unit, wherein the first driving circuit and the second driving circuit drive the display unit and the transparency control unit simultaneously in different modes respectively. The first driving circuit and the second driving circuit determine whether the relationship between the light intensity of the penetrating light of the display device and the light intensity of the display light meets a preset condition. The light intensity of the penetrating light is the light intensity of the ambient light after penetrating the display device. When the relationship between the light intensity of the penetrating light of the display device and the light intensity of the display light meets the preset condition, the first driving circuit does not adjust the light intensity of the display light. When the relationship between the light intensity of the penetrating light of the display device and the light intensity of the display light does not meet the preset condition, the first driving circuit and the second driving circuit adjust at least one of the driving signal used to drive the display unit and the driving signal used to drive the transparency control unit.

2. The display device according to claim 1, characterized in that The display unit and the transparency control unit are driven at different update rates.

3. The display device according to claim 2, characterized in that: The display unit is driven at a higher update rate than the transparency control unit.

4. The display device according to claim 1, characterized in that The display unit is driven with a first grayscale number, and the transparency control unit is driven with a second grayscale number, wherein the first grayscale number is different from the second grayscale number.

5. The display device according to claim 4, characterized in that: The first grayscale number is greater than the second grayscale number.

6. The display device according to claim 1, characterized in that: The display unit is driven in a current mode, and the transparency control unit is driven in a voltage mode.

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