Display device

Abstract

A display device includes a display panel including a plurality of sub-pixel regions, and a light travel direction changing layer including a plurality of light-transmissive patterns for respectively changing a travel direction of light emitted from the plurality of sub-pixel regions. Here, a center point of a light-emitting surface of each of the plurality of light-transmissive patterns is defined as a point at which a virtual surface corresponding to the light-emitting surface of each of the plurality of light-transmissive patterns contacts an optimal light route connecting a sub-pixel region corresponding to each light-transmissive pattern and a center point of a viewing area to each other. In this way, light from the sub-pixel region can be transmitted through the light-transmissive pattern and can be guided toward the center point of the viewing area. Accordingly, display quality in the viewing area can be improved.

Description

Technical Field

[0001] This disclosure relates to a display device for displaying images. Background Technology

[0002] Display devices are widely used for image display functions in various electronic devices, such as mobile communication terminals, electronic notebooks, e-books, PMPs (portable multimedia players), navigation systems, UMPCs (ultra-mobile PCs), mobile phones, smartphones, tablet PCs (personal computers), watch phones, electronic tablets, wearable devices, portable information devices, vehicle control displays, televisions, laptops, and monitors. Research on improving the thickness, reducing weight, and lowering power consumption of such display devices and electronic products incorporating them is ongoing.

[0003] Examples of display devices include liquid crystal display (LCD), plasma display panel (PDP), field emission display (FED), electrowetting display (EWD), and electroluminescent display (ELDD).

[0004] Display devices can be flexible and can be deformed into various forms that are not planar.

[0005] Furthermore, the display device can use a stereoscopic photography scheme to display 3D stereoscopic images. A stereoscopic photography scheme refers to a three-dimensional image display scheme in which different combinations of images based on parallax information corresponding to the distance (approximately 65mm) between the viewer's left and right eyes are provided to the left and right eyes respectively, allowing the viewer to recognize a three-dimensional image through the combination of these images.

[0006] Stereoscopic photography solutions can include automated stereoscopic solutions that do not use glasses. In such automated stereoscopic solutions, a parallax barrier or biconvex lens positioned between the luminous display panel and the viewer separates the left-eye and right-eye images from each other. That is, in automated stereoscopic solutions, the brightness distribution of the image visible to the viewer can vary according to the viewer's position, allowing the left and right eyes to see different images, thus enabling the viewer to perceive a stereoscopic image.

[0007] In the biconvex lens scheme, the display panel includes a left-eye pixel area for displaying the left-eye image and a right-eye pixel area for displaying the right-eye image. Light from the left-eye pixel area and light from the right-eye pixel area are positioned on the focal plane of the biconvex lens, thereby providing left-eye and right-eye images based on the directional characteristics of the biconvex lens. Summary of the Invention

[0008] In a planar display device, the entire planar display area faces a predefined viewing area. Therefore, most of the light beam from the display area can be directed towards the viewing area. That is, the beam from the display area that is directed towards the viewing area can have relatively high brightness.

[0009] However, in display devices where the shape of the display surface differs from that of a flat surface, at least a portion of the display area, including at least one curved region, may not face the viewing area. Therefore, a light beam emitted from a portion of the display area that does not face the intended viewing area and directed towards the viewing area may have relatively low brightness. Consequently, the display quality in the viewing area may deteriorate.

[0010] In particular, when a display device has an outwardly curved shape that bulges towards the viewing area, light emitted from the two opposite edge regions of the outwardly curved display area may not travel towards the viewing area. Therefore, the display quality in the viewing area may be further degraded.

[0011] Furthermore, in display devices that include biconvex lenses to provide 3D image display functionality, light from each sub-pixel region can not only be incident on a target biconvex lens corresponding to each sub-pixel region, but also on non-target biconvex lenses disposed around the target biconvex lenses. In this case, an overlapping image viewing area may occur, in which images are displayed in an overlapping manner due to light guided by the non-target biconvex lenses. Therefore, the display quality of the 3D image may be degraded.

[0012] Therefore, the purpose of this disclosure is to provide a display device that can improve the display quality in the viewing area even when its display surface is deformed into a shape different from a planar shape.

[0013] Another object of this disclosure is to provide a display device that can improve the display quality in the viewing area even when its display surface includes an outwardly curved shape.

[0014] Another object of this disclosure is to provide a display device that can reduce the occurrence of overlapping image viewing areas.

[0015] The purposes of this disclosure are not limited to those described above. Other purposes and advantages not mentioned in this disclosure will be understood based on the following description, and these other purposes and advantages will become clearer based on embodiments of the disclosure. Furthermore, it will be readily understood that the purposes and advantages of this disclosure can be achieved using the means and combinations thereof shown in the claims.

[0016] An example display device according to this disclosure includes: a display panel including a plurality of sub-pixel regions; and a light travel direction changing layer including a plurality of light-transmitting patterns for respectively changing the travel direction of light emitted from the plurality of sub-pixel regions.

[0017] Here, each of the multiple light-transmitting patterns is arranged such that the center point of the light-emitting surface of the light-transmitting pattern is on the optimal light path connecting the center point of the sub-pixel area corresponding to the light-transmitting pattern and the center point of the viewing area.

[0018] In this way, light from the sub-pixel area can pass through the light-transmitting pattern and be guided toward the center point of the viewing area. Therefore, the display quality in the viewing area can be improved.

[0019] The display panel and the light travel direction changing layer can each have a curved shape. Even in this case, the center point of the emitting surface of each of the multiple light-transmitting patterns is located at a position corresponding to the optimal light path of the sub-pixel area corresponding to each light-transmitting pattern. Therefore, degradation of display quality in the viewing area due to the curved shape can be prevented.

[0020] The display device may also include a lens array disposed on a light travel direction changing layer, wherein the lens array includes a plurality of biconvex lenses arranged in a matrix.

[0021] In this case, the light travel direction changing layer can allow light from each sub-pixel region to be directed toward the target biconvex lens, thereby reducing the overlapping image viewing area.

[0022] According to one embodiment of this disclosure, a light travel direction changing layer is provided on a display panel. This light travel direction changing layer is used to change the travel direction of light emitted from each of a plurality of sub-pixel regions based on a predetermined viewing area. The light travel direction changing layer includes a plurality of light-transmitting patterns corresponding to the plurality of sub-pixel regions. Here, each of the plurality of light-transmitting patterns is arranged such that the center point of the light-emitting surface of the light-transmitting pattern is on the optimal light path connecting the sub-pixel region corresponding to the light-transmitting pattern to the center point of the viewing area.

[0023] Therefore, each of the multiple light-transmitting patterns is located in the optimal light path between each sub-pixel in the multiple sub-pixel regions and the center point of the viewing area. Thus, regardless of the shape of the display device, light from each sub-pixel region can pass through each light-transmitting pattern as it is guided toward the viewing area. Therefore, degradation of display quality in the viewing area due to the shape of the display device, which includes at least one curved display surface, can be prevented.

[0024] In particular, even when the display device has an outwardly curved shape, light emitted from each sub-pixel area and directed toward the viewing area can pass through each light-transmitting pattern, regardless of the position of the sub-pixel area. Therefore, degradation of the display quality in the viewing area can be prevented.

[0025] Furthermore, since the light emission path from each sub-pixel region is controlled by each light-transmitting pattern, light can be prevented from incident on non-target biconvex lenses. This reduces the overlapping image viewing area, thereby improving the display quality of 3D images.

[0026] The effects of this disclosure are not limited to those described above, and other effects not mentioned will be clearly understood by those skilled in the art based on the following description. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the display device and the viewing area.

[0028] Figure 2 This is a diagram illustrating a display device of one embodiment of the present disclosure.

[0029] Figure 3 It is shown as Figure 2 The diagram shows the display panel and the light travel direction changing layer of the display device components.

[0030] Figure 4 This is a diagram illustrating a display device according to another embodiment of the present disclosure.

[0031] Figure 5 It is shown Figure 4 A diagram of the lens array in the image.

[0032] Figure 6 It is shown as Figure 4 The diagram shows the components of the display device, including the display panel, the light travel direction changing layer, and the lens array.

[0033] Figure 7 It is shown Figure 2 and 4 The image shows the display panel.

[0034] Figure 8 It shows the corresponding Figure 7 A diagram illustrating an example of the equivalent circuit for a sub-pixel region.

[0035] Figure 9 It is shown Figure 7 An example diagram of a portion of the display panel.

[0036] Figure 10 It shows the corresponding Figure 4 A schematic diagram of the light-emitting area of ​​each sub-pixel region in part A.

[0037] Figure 11 It shows the corresponding Figure 4 A schematic diagram of the light-emitting area of ​​each sub-pixel region in part B.

[0038] Figure 12 It shows the corresponding Figure 4 A schematic diagram of the light-emitting area of ​​each sub-pixel region in part C.

[0039] Figure 13 yes Figure 3 and 6 A schematic diagram showing the position of a light-transmitting pattern in a display device.

[0040] Figure 14 It is based on Figure 3 and 6 A schematic diagram showing the positional changes of a distorted, translucent pattern in a display device.

[0041] Figure 15 It is based on Figure 3 and 6 A schematic diagram of the position correction of a curved light-transmitting pattern in a display device.

[0042] Figure 16 yes Figure 3 and 6 A schematic diagram of the width of the light-transmitting pattern in a display device.

[0043] Figure 17 This is a diagram showing a comparative example of the inner corners of a translucent pattern.

[0044] Figure 18 yes Figure 3 and 6 A schematic diagram of the inner corner of the light-transmitting pattern in a display device. Detailed Implementation

[0045] For simplicity and clarity, the elements in the accompanying drawings are not necessarily drawn to scale. The same reference numerals in different drawings denote the same or similar elements and therefore perform similar functions. Furthermore, for simplicity of description, descriptions and details of well-known steps and elements have been omitted. In addition, numerous specific details are set forth in the following detailed description of this disclosure to provide a thorough understanding of it. However, it will be understood that this disclosure can be practiced without these specific details. In other instances, well-known methods, processes, components, and circuits have not been described in detail to avoid unnecessarily obscuring various aspects of this disclosure. Examples of various embodiments are further illustrated and described below. It should be understood that the description herein is not intended to limit the claims to the specific embodiments described. Rather, this disclosure is intended to cover alternatives, modifications, and equivalents that may be included within the spirit and scope of this disclosure as defined by the appended claims.

[0046] The shapes, dimensions, ratios, angles, quantities, etc., disclosed in the accompanying drawings used to describe embodiments of this disclosure are exemplary, and this disclosure is not limited thereto. The same reference numerals denote the same elements herein. Furthermore, for simplicity of description, descriptions and details of well-known steps and elements have been omitted. In addition, numerous specific details are set forth in the following detailed description of this disclosure to provide a thorough understanding of it. However, it will be understood that this disclosure can be practiced without these specific details. In other instances, well-known methods, processes, components, and circuits have not been described in detail to avoid unnecessarily obscuring various aspects of this disclosure.

[0047] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure. As used herein, the singular forms “a” and “an” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the terms “comprising” and “including” as used in this specification specify the presence of the stated features, integers, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, operations, elements, components, and / or portions thereof. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items. When preceding a list of elements, expressions such as “at least one” may modify the list of elements as a whole and may not modify the individual elements of the list. When referring to “C through D”, this means including C through D, unless otherwise stated.

[0048] It should be understood that although the terms "first," "second," "third," etc., may be used herein to describe various elements, components, regions, layers, and / or parts, these elements, components, regions, layers, and / or parts should not be limited by these terms. These terms are used to distinguish one element, component, region, layer, or part from another element, component, region, layer, or part. Therefore, without departing from the spirit and scope of this disclosure, the first element, component, region, layer, or part described below may be referred to as the second element, component, region, layer, or part.

[0049] Furthermore, it should be understood that when a first element or layer is referred to as existing "above" or "below" a second element or layer, the first element may be directly disposed above or below the second element or layer, or may be indirectly disposed above or below the second element or layer, wherein a third element or layer is disposed between the first and second elements or layers. It should be understood that when an element or layer is referred to as being "connected to" or "coupled to" another element or layer, it may be directly on, directly connected to, or directly coupled to the other element or layer, or one or more intermediate elements or layers may exist. Furthermore, it will be understood that when an element or layer is referred to as being "between" two elements or layers, it may be the only element or layer between the two elements or layers, or one or more intermediate elements or layers may exist.

[0050] Furthermore, as used herein, when a layer, membrane, region, plate, etc., is disposed "on" or "top" of another layer, membrane, region, plate, etc., the former can directly contact the latter, or another layer, membrane, region, plate, etc., can be disposed between the former and the latter. As used herein, when a layer, membrane, region, plate, etc., is directly disposed "on" or "top" of another layer, membrane, region, plate, etc., the former directly contacts the latter, and no other layer, membrane, region, plate, etc., is disposed between the former and the latter. Furthermore, as used herein, when a layer, membrane, region, plate, etc., is disposed "below" or "under" another layer, membrane, region, plate, etc., the former can directly contact the latter, or another layer, membrane, region, plate, etc., can be disposed between the former and the latter. As used herein, when a layer, membrane, region, plate, etc., is directly disposed "below" or "under" another layer, membrane, region, plate, etc., the former directly contacts the latter, and no other layer, membrane, region, plate, etc., is disposed between the former and the latter.

[0051] Unless otherwise defined, all terms used herein, including technical and scientific terms, shall have the same meaning as commonly understood by one of ordinary skill in the art to which the concepts of this invention pertain. It should also be understood that terms such as those defined in common dictionaries shall be interpreted as having a meaning consistent with their meaning in the context of the relevant field and shall not be interpreted in an idealized or overly formal sense, unless expressly so defined herein.

[0052] In one example, when an embodiment can be implemented differently, the functions or operations specified in a particular box may occur in a different order than those specified in the flowchart. For example, two consecutive boxes may actually be executed simultaneously. Depending on the associated functions or operations, these boxes may be executed in reverse order.

[0053] In descriptions of temporal relationships, such as the temporal precedent relationship between two events such as “after,” “follow,” or “before,” unless it indicates “directly after,” “directly following,” or “directly before,” another event may occur in between. Features of various embodiments of this disclosure can be combined partially or completely with each other and can be technically associated with or operable on each other. Embodiments can be implemented independently of each other and can be implemented together in an associated relationship. For ease of explanation, spatial relative terms such as “below,” “under,” “lower,” “below,” “above,” and “upper” are used herein to describe the relationship of one element or feature to another element or feature shown in the figures. It should be understood that, in addition to the orientation shown in the figures, spatial relative terms are also intended to include different orientations of the device in use or operation. For example, when the device in the figures is flipped, an element described as “below,” “under,” or “below” other elements or features will subsequently be oriented “above” other elements or features. Thus, the example terms “below” and “below” can include orientations above and below. The device may be oriented in other ways, such as rotated 90 degrees or in other orientations, and the spatial relative descriptors used herein should be interpreted accordingly.

[0054] The terms "X-axis direction," "Y-axis direction," and "Z-axis direction" should not be interpreted merely as having a geometric relationship where the X-axis, Y-axis, and Z-axis directions are perpendicular to each other. Instead, they can be interpreted as having a wider range of directions within which the components described herein can function functionally.

[0055] In the following description, a display device and an electronic device having the display device according to an embodiment of the present disclosure will be described with reference to the accompanying drawings.

[0056] Figure 1 This is a schematic diagram of the display device and the viewing area.

[0057] like Figure 1 As shown, a display device 10 according to one embodiment of the present disclosure has a display surface with a shape different from a planar shape.

[0058] In one example, such as Figure 1As shown, the display device 10 has a curved display surface that curves outward toward the area 20 (hereinafter referred to as the "viewing area") where the viewer is viewing the image from the display device 10. That is, the display surface may have an outwardly curved shape.

[0059] However, this is merely an example. A display device 10 according to one embodiment of this disclosure may have a display surface with a curved shape (i.e., an inwardly curved shape) that is concave toward the viewing area 20. Alternatively, a display device 10 according to one embodiment of this disclosure may have a display surface that includes at least one of an outwardly curved shape and an inwardly curved shape, as well as a planar shape.

[0060] Regardless of the shape of the display surface of the display device 10, in order to ensure the display quality in the viewing area 20, light from the display device 10 needs to be emitted toward the viewing area 20.

[0061] That is, such as Figure 1 As shown by the double-dotted line, light emitted from the midpoint of the display device 10 is guided toward the viewing area 20.

[0062] Similarly, as Figure 1 As shown by the single-dotted line and long dashed line, light emitted from the two opposite edges of the display device 10 is guided toward the viewing area 20.

[0063] In this way, the viewer can visually identify the entire display surface of the display device 10 at all points in the viewing area 20.

[0064] However, as Figure 1 As shown, when the display device 10 includes a display surface with an outwardly curved shape, one of the two opposite edges of the display surface may face one side and the center of the viewing area 20, but may not face the opposite side of the viewing area 20. Therefore, the size of the viewing area 20 may be reduced, or the display quality in the viewing area 20 may be degraded.

[0065] Therefore, one embodiment of this disclosure provides a display device 10 that can prevent a decrease in display quality in the viewing area 20 due to deformation of the shape of the display surface.

[0066] Figure 2 This is a cross-sectional view of a display device illustrating one embodiment of the present disclosure. Figure 3 It is shown as Figure 2 The diagram shows the display panel and the light travel direction changing layer of the display device components.

[0067] like Figure 2As shown, a display device 10 according to one embodiment of the present disclosure includes: a display panel 100 that emits light for displaying an image; and a light travel direction changing layer 200 disposed on the display panel and based on the viewing area (…). Figure 1 20) Change the direction of light travel from the display panel.

[0068] like Figure 3 As shown, a display device 10 according to an embodiment of the present disclosure includes: a display panel 100 including a plurality of sub-pixel regions SPA arranged in a matrix and outputting light for displaying an image; and a light travel direction changing layer 200 disposed on the display panel 100 for adjusting the light travel direction based on a predefined viewing area. Figure 1 20) Change the direction of light emitted from each of the multiple sub-pixel regions SPA.

[0069] The display panel 100 includes a display area for displaying images. Figure 7 The image contains an AA (image area), and includes multiple sub-pixel regions SPA arranged in a matrix within the display area AA. Each sub-pixel region SPA emits light at a brightness level corresponding to the image.

[0070] When the display panel 100 displays a color image, each of the plurality of sub-pixel regions SPA emits light within a wavelength range corresponding to one of a plurality of different colors. Here, the plurality of colors may include red, green, and blue. That is, the plurality of sub-pixel regions SPA may include a first sub-pixel region SPA1 corresponding to red, a second sub-pixel region SPA2 corresponding to green, and a third sub-pixel region SPA3 corresponding to blue. Alternatively, the plurality of colors may also include white. For this purpose, the display panel 100 may include a color filter (not shown).

[0071] The light travel direction changing layer 200 may include multiple light-transmitting patterns 210 that correspond to multiple sub-pixel regions SPA and are arranged in a matrix, and light-blocking patterns 220 disposed between the multiple light-transmitting patterns 210.

[0072] When light from each sub-pixel region SPA passes through each light-transmitting pattern 210 corresponding to each sub-pixel region SPA, the direction of light travel in the sub-pixel region can be changed to face the viewing area 20.

[0073] Alternatively, the display device 10 may provide the function of displaying 3D stereoscopic images.

[0074] Figure 4 This is a diagram illustrating a display device according to another embodiment of the present disclosure. Figure 5 It is shown Figure 4 A diagram of the lens array in the image. Figure 6 It is shown as Figure 4 The diagram shows the components of the display device, including the display panel, the light travel direction changing layer, and the lens array.

[0075] like Figure 4 As shown, in addition to the display device 10' also including a lens array 300 disposed on the light travel direction changing layer 200, the display device 10' according to another embodiment of the present disclosure and Figure 2 The same embodiment is shown. Further descriptions of them will be omitted in the following text.

[0076] like Figure 5 As shown, the lens array 300 of the display device 10' according to another embodiment of the present disclosure includes a lens layer 310 composed of a plurality of biconvex lenses LL arranged in a matrix, and a spacer layer 320 that separates the lens layer 310 from the light travel direction changing layer 200.

[0077] The lens array 300 separates the left-eye and right-eye images from the display panel 100.

[0078] like Figure 6 As shown, the display panel 100 may include left-eye image sub-pixel regions LSPA1, LSPA2, and LSPA3 that emit light from the left-eye image, and right-eye image sub-pixel regions RSPA1, RSPA2, and RSPA3 that emit light from the right-eye image. The first, second, and third left-eye image sub-pixel regions LSPA1, LSPA2, and LSPA3, which are adjacent to each other and correspond to different colors within the left-eye image sub-pixel regions, can constitute a left-eye image unit pixel region LUPA, serving as the basic color unit of the left-eye image. Similarly, the first, second, and third right-eye image sub-pixel regions RSPA1, RSPA2, and RSPA3, which are adjacent to each other and correspond to different colors within the right-eye image sub-pixel regions, can constitute a right-eye image unit pixel region RUPA, serving as the basic color unit of the right-eye image.

[0079] Each biconvex lens LL of the lens array 300 can correspond to at least one left-eye image unit pixel region LUPA, at least one right-eye image unit pixel region RUPA, and at least two black sub-pixel regions BSPA, wherein the black sub-pixel regions BSPA correspond to each of the two opposite edges of the lens LL. Therefore, the left-eye image unit pixel region LUPA and the right-eye image unit pixel region RUPA can be separated from each other according to the directional characteristics of the biconvex lens LL.

[0080] Because of the black sub-pixel region BSPA corresponding to the edge of each biconvex lens LL, distortion caused by the edge of each biconvex lens LL can be prevented.

[0081] Furthermore, according to another embodiment of this disclosure, a light travel direction changing layer 200 disposed between the display panel 100 and the lens array 300 can prevent light from each sub-pixel region (LSPA1, LSPA2, LSPA3, RSPA1, RSPA2, and RSPA3) from being incident on non-target biconvex lenses other than the target biconvex lens LL corresponding to each sub-pixel region. As a result, the size of the overlapping image viewing area can be reduced.

[0082] Figure 7 It is shown Figure 2 and 4 The image shows the display panel. Figure 8 It shows the corresponding Figure 7 A diagram illustrating an example of the equivalent circuit for a sub-pixel region. Figure 9 It is shown Figure 7 An example diagram of a portion of the display panel.

[0083] like Figure 7 As shown, the display panel 100 includes a display area AA in which an image is displayed, a plurality of sub-pixel areas SPA arranged in the display area AA, and signal lines GL and DL connected to the plurality of sub-pixel areas SPA. The signal lines GL and DL of the display panel 100 can transmit drive signals provided from panel drivers TC, GDR and DDR to each sub-pixel area SPA.

[0084] The signal lines GL and DL of the display panel 100 may include gate line GL for transmitting the scan signal SCAN of the gate driver GDR, and data line DL for transmitting the data signal VDATA of the data driver DDR.

[0085] When the display panel 100 includes a light-emitting element (not shown) corresponding to each sub-pixel region SPA, the display panel 100 may also include a first driving power line and a second driving power line for respectively transmitting a first driving power supply VDD and a second driving power supply VSS for the operation of the light-emitting element.

[0086] The panel drivers TC, GDR, and DDR may include a gate driver GDR connected to the gate line GL of the display panel 100, a data driver DDR connected to the data line DL of the display panel 100, and a timing controller TC for controlling the operating timing of the gate driver GDR and the data driver DDR respectively.

[0087] The timing controller TC rearranges the digital video data RGB input from the external system based on the resolution of the display panel 100, and provides the rearranged digital video data RGB' to the data driver DDR.

[0088] The timing controller TC can generate and provide a data control signal DDC for controlling the operating timing of the data driver DDR and a gate control signal GDC for controlling the operating timing of the gate driver GDR based on timing signals such as the vertical synchronization signal Vsync, the horizontal synchronization signal Hsync, the dot clock signal DCLK, and the data enable signal DE.

[0089] The gate driver GDR sequentially provides a scan signal SCAN to multiple gate lines GL during a frame time period to display the image based on the gate control signal GDC. That is, during a frame time period, the gate driver GDR provides the scan signal SCAN to each gate line GL during each horizontal time period corresponding to each gate line GL. Here, the gate line GL may correspond to a row of sub-pixel regions SPA arranged horizontally among multiple sub-pixel regions SPA.

[0090] The data driver DDR converts the rearranged digital video data RGB' into analog data voltages according to the data control signal DDC. During each horizontal time period, the data driver DDR provides the data signal VDATA corresponding to each sub-pixel region SPA of each gate line GL, based on the rearranged digital video data RGB'.

[0091] like Figure 8 As shown, each sub-pixel region SPA includes an OLED light-emitting element and a pixel driver circuit PDC for providing driving signals to the OLED light-emitting element.

[0092] In one example, the pixel driver circuit PDC includes a driving transistor DT, a switching transistor ST, and a storage capacitor Cst.

[0093] In addition, although Figure 8 Not shown, but each sub-pixel region SPA may also include compensation circuitry (not shown) for compensating for degradation of the driving transistor DT and / or the light-emitting element OLED. The compensation circuitry may include at least one transistor (not shown) to detect the amount of degradation or to provide a reference power supply (not shown).

[0094] The driving transistor DT can be connected in series to the light-emitting element OLED, and can be positioned between the first driving power line VDDL that provides the first driving power VDD and the second driving power line VSSL that provides the second driving power VSS, wherein the potential of the second driving power VSS is lower than the potential of the first driving power VDD.

[0095] That is, one end of the driving transistor DT is connected to the first driving power line VDDL, and the opposite end of the driving transistor DT is connected to one end of the light-emitting element OLED. In addition, the opposite end of the light-emitting element OLED is connected to the second driving power line VSSL.

[0096] A switching transistor ST is positioned between the first node ND1 and the data line DL providing the data signal VDATA for each sub-pixel region SPA. The first node ND1 is the contact point between the gate of the driving transistor DT and the switching transistor ST. Furthermore, the gate of the switching transistor ST is connected to the gate line GL.

[0097] The storage capacitor Cst is positioned between the first node ND1 and the second node ND2. The second node ND2 is the contact point between the driving transistor DT and the light-emitting element OLED.

[0098] The operation of the pixel drive circuit PDC is as follows.

[0099] The switching transistor ST is turned on based on the scan signal SCAN of the gate line GL. At this time, the data signal VDATA of the data line DL is supplied to the gate of the driving transistor DT and the storage capacitor Cst through the turned-on switching transistor ST and the first node ND1.

[0100] The storage capacitor Cst is charged using the data signal VDATA.

[0101] Furthermore, the driving transistor DT is turned on based on the data signal VDATA and the charging voltage of the storage capacitor Cst to generate a driving current corresponding to the data signal VDATA. Therefore, the driving current generated by the turned-on driving transistor DT can be provided to the light-emitting element OLED.

[0102] like Figure 9 As shown, the display panel 100 may include a support substrate 110, a transistor array 120 disposed on the support substrate 110, a light-emitting array 130 disposed on the transistor array 120, and a sealing film 140 disposed on the light-emitting array 130.

[0103] The support substrate 110 can be made of a flexible insulating material. In one example, the support substrate 110 can be made of one of PI (polyimide), PC (polycarbonate), PET (polyethylene terephthalate), PMP (polymethylpentene), PMMA (polymethyl methacrylate), PNB (polynorbornene), PEN (polyethylene terephthalate), PES (polyethersulfone), and COS (cyclic olefin copolymer).

[0104] Transistor array 120 includes pixel driving circuitry corresponding to each of the plurality of sub-pixel regions SPA. Figure 8 PDC). For example Figure 8 As shown, the pixel driving circuit PDC may include a driving transistor DT connected to the light-emitting element OLED, a switching transistor ST that turns the scan signal based on the gate line GL on and off and transmits the data signal VDATA of the data line DL to the gate of the driving transistor DT, and a storage capacitor Cst connected to the gate of the driving transistor DT. The transistor array 120 also includes signal lines GL and DL, which are connected to the pixel driving circuit PDC of each sub-pixel region SPC.

[0105] The transistor array 120 may further include a planarization film 121 disposed on the support substrate 110 and covering the pixel driving circuit PDC in a planarized manner.

[0106] The light-emitting array 130 can be disposed on the planarization film 121 of the transistor array 120.

[0107] The light-emitting array 130 may include a light-emitting element ED corresponding to each of the plurality of sub-pixel regions SPA. Figure 8 (OLED in the middle).

[0108] Each light-emitting element ED may include a first electrode 131 and a second electrode 132 facing away from each other, and a light-emitting structure 133 disposed therebetween.

[0109] In one example, the light-emitting array 130 may include a first electrode 131 disposed on the planarization film 121 and corresponding to each sub-pixel region SPA, a partition 134 disposed on the planarization film 121 and corresponding to the outer edge of each sub-pixel region SPA and covering the edge of the first electrode 131, a light-emitting structure 133 disposed on the first electrode 131, and a second electrode 132 disposed on the partition 134 and the light-emitting structure 133.

[0110] A sealing film 140 is disposed on the light-emitting array 130 to seal the light-emitting array 130.

[0111] The sealing membrane 140 may have a structure in which multiple protective membranes 141, 142 and 143 made of different insulating materials or of different thicknesses are stacked in sequence.

[0112] In one example, the plurality of protective films 141, 142 and 143 may include a first protective film 141 covering the second electrode 132 and made of an inorganic insulating material, a second protective film 141 disposed on the first protective film 141 in a planarized manner and made of an organic insulating material, and a third protective film 143 disposed on the second protective film 142 and made of an inorganic insulating material.

[0113] The sealing membrane 140 can delay the intrusion of moisture or oxygen into the light-emitting array 130. Therefore, the influence of foreign objects can be reduced.

[0114] The auxiliary substrate 170 can be used to reinforce the support substrate 110, and can be omitted depending on the material of the support substrate 110.

[0115] In one example, such as Figure 2 and Figure 4 As shown, display devices 10 and 10' according to embodiments of the present disclosure may each include a light travel direction changing layer 200 to change the emission direction of light from each sub-pixel region SPA provided in the display panel 100. Specifically, the light travel direction changing layer 200 includes a plurality of light-transmitting patterns 210 corresponding to the plurality of sub-pixel regions SPA respectively. Each light-transmitting pattern 210 adjusts the light emission direction of each sub-pixel region SPA according to the viewing area 20.

[0116] Therefore, the luminescent surface of each light-transmitting pattern 210 corresponds to the optimal light path, which corresponds to each sub-pixel region SPA and the viewing area 20.

[0117] That is, the tilt of the optimal light path corresponding to each sub-pixel region SPA can be changed according to the position of each sub-pixel region SPA in the display panel 100. Therefore, the position of the light-emitting surface of each light-transmitting pattern 210 corresponding to each sub-pixel region SPA is also adjusted according to the position of each sub-pixel region SPA.

[0118] In one embodiment, such as Figure 2 and Figure 4 As shown, when the display device 10 has an outwardly curved display surface, each sub-pixel region SPA disposed in the central region surrounding the center point of the display panel 100 faces the center point of the viewing area 20. Therefore, the light-emitting surface of each light-transmitting pattern 210 is perpendicular to the light emission direction of each sub-pixel region SPA and relatively parallel to each sub-pixel region SPA.

[0119] Figure 10 It shows the corresponding Figure 4 A schematic diagram of the light-emitting area of ​​each sub-pixel region in part A.

[0120] like Figure 4 and Figure 10 As shown, in the outwardly curved display device 10, the light emission direction of each sub-pixel region SPA located in the central region of the display panel 100 is toward the center point of the viewing area 20. Therefore, the light emission surface of each light-transmitting pattern 210 is parallel to each sub-pixel region SPA and perpendicular to the light emission direction of each sub-pixel region SPA.

[0121] Conversely, each sub-pixel region SPA in each of the two opposite edge portions of the outwardly curved display device 10 does not face the center point of the viewing area 20. Therefore, in each of the two opposite edge portions of the display device 10, each light-transmitting pattern 210 alters the direction of light travel from each sub-pixel region SPA to guide it to the center point of the viewing area 20. For this purpose, in each of the two opposite edge portions of the display device 10, the light-emitting surface of each light-transmitting pattern 210 is neither parallel to nor perpendicular to the light emission direction of each sub-pixel region SPA.

[0122] Figure 11 It shows the corresponding Figure 4 A schematic diagram of the light-emitting area of ​​each sub-pixel region in part B. Figure 12 It shows the corresponding Figure 4 A schematic diagram of the light-emitting area of ​​each sub-pixel region in part C.

[0123] like Figure 11 and Figure 12 As shown, in the outwardly curved display device 10, the light emission direction from each sub-pixel region SPA located at one side edge of the display panel 100 is not directed towards the center point of the viewing area 20. To change this direction, the light-emitting surface of each light-transmitting pattern 210 is not parallel to each sub-pixel region SPA, but is inclined towards the center point of the viewing area 20. That is, the virtual line connecting each sub-pixel region SPA and the center point of the light-emitting surface of each light-transmitting pattern 210 to each other is inclined towards the center point of the viewing area 20 relative to the light emission direction from each sub-pixel region SPA.

[0124] Therefore, in each display device 10 and 10' according to the embodiments of this disclosure, the positional conditions of the light-transmitting pattern 210 can be derived as follows.

[0125] Figure 13 yes Figure 3 and 6 A schematic diagram showing the position of a light-transmitting pattern in a display device.

[0126] Figure 13 An example of a coordinate system is shown, where it is assumed that... Figure 2 and 4 The curvature center CC of the curved shape in each of the outwardly curved display devices 10 and 10' shown is reference point (0,0).

[0127] Furthermore, assume that the radius of curvature of the curved display panel 100 is R (panel radius). Assume that corresponding to... Figure 1The optimal viewing distance for viewing area 20 is O. Furthermore, it is assumed that the center point CV (viewing center) of viewing area 20 is located at coordinates (0, R+O).

[0128] Figure 13 The diagram shows a light-emitting surface SE (surface of the light-emitting device) corresponding to the light-emitting array 130 and a virtual surface VST corresponding to the light-emitting surface of each of the multiple light-transmitting patterns 210 included in the outwardly curved light travel direction changing layer 200, wherein the light-emitting array consists of multiple light-emitting elements that emit light corresponding to multiple sub-pixel regions SPA of the outwardly curved display panel 100. Figure 9 The ED in the display panel 100 is composed of a sealing film. Figure 9 The thickness of 140 and the light-transmitting pattern (in the middle) Figure 9 The thickness of the luminescent surface SE and the virtual surface VST is 210), and they are spaced apart from each other by a predetermined first interval g1.

[0129] As described above, in the various display devices 10 and 10' according to embodiments of the present disclosure, the center point TP (transmission point) (x) of the luminescent surface of each light-transmitting pattern 210 t ,y t ) and will correspond to the sub-pixel region EP (emission point) (x) of each light-transmitting pattern 210 p ,y p The optimal light path OPL corresponds to the center point CV of the viewing area 20.

[0130] That is, the center point TP(x) of the luminescent surface of each of the multiple light-transmitting patterns 210 t ,y t ) corresponds to the sub-pixel region EP (emission point) (x) corresponding to each light-transmitting pattern 210. p ,y p The optimal light path OPL, which connects to the center point CV of the viewing area 20, is the point where it contacts the virtual surface VST of the light-emitting surface corresponding to each of the multiple light-transmitting patterns 210.

[0131] That is, at the center point TP(x) of the luminescent surface of a light-emitting pattern 210 located at the virtual surface VST. t ,y t At position ), a sub-pixel region EP (emission point) corresponding to a light-transmitting pattern 210 is located at (x). p ,y p The optimal optical path is the OPL contact virtual surface VST.

[0132] Therefore, light rays from each sub-pixel region SPA can pass through the light-transmitting pattern 210 along the optimal light path OPL and be emitted toward the center point CV of the viewing area 20. This improves the display quality in the viewing area 20.

[0133] Specifically, in a coordinate system (x,y) with the curvature center CC of the curved shape as the reference point (0,0), the center point TP(x) of the luminous surface passing through a light-emitting pattern 210 can be defined based on the equation of the line represented in Equation 1 below. t ,y t The optimal optical path (OPL) is determined by the optical path.

[0134] Equation 1

[0135] y = mx + (R + O)

[0136] In Equation 1, m represents a sub-pixel region EP(x) corresponding to a light-transmitting pattern 210. p ,y p The slope of the optimal light path OPL in the coordinate system (x,y), where the center of curvature CC of the curved shape is the reference point (0,0).

[0137] As shown in Equation 1, in a coordinate system (x,y) with the curvature center CC of the curved shape as the reference point (0,0), the position TP(x) of the center point of the luminous surface of each light-emitting pattern 210 can be derived based on the slope m of the optimal light path OPL, the curvature radius R of the curved shape, and the optimal viewing distance O. t ,y t ).

[0138] The EP(x) of each sub-pixel region can be derived according to the following equation 2. t ,y t The slope m of the optimal optical path OPL.

[0139] Equation 2

[0140]

[0141] That is, as shown in Equation 2, in the coordinate system (x,y) with the curvature center CC of the curved shape as the reference point (0,0), the position EP(x) of each sub-pixel region in the coordinate system (x,y) with the curvature center CC of the curved shape as the reference point (0,0) can be determined based on the position EP(x) of each sub-pixel region in the coordinate system (x,y) with the curvature center CC of the curved shape as the reference point (0,0). p ,y p The radius of curvature R of the curved shape and the optimal viewing distance O are used to derive the EP(x) region of each subpixel. p ,y p The slope m of the optimal optical path OPL.

[0142] Furthermore, in the coordinate system (x,y) with the curvature center CC of the curved shape as the reference point (0,0), the virtual surface VST corresponding to the luminous surface of each of the multiple light-transmitting patterns 210 can be derived based on the equation of the circle as shown in Equation 3 below.

[0143] Equation 3

[0144] x 2 +y 2 =(R+g1) 2

[0145] Therefore, when combining equations 1, 2, and 3, the position TP(x) of the center point of the luminescent surface of each light-emitting pattern 210 in the coordinate system (x,y) with the curvature center CC of the curved shape as the reference point (0,0) can be derived based on equations 4 and 5 below. t ,y t ).

[0146] Equation 4

[0147]

[0148] Equation 5

[0149] y = mx + (R + O)

[0150] That is, as represented by equations 4 and 5, the position TP(x) of the center point of the emitting surface of each light-transmitting pattern 210 in the coordinate system (x,y) with the curvature center CC of the curved shape as the reference point (0,0) can be derived based on the slope m of the optimal light path OPL of each sub-pixel region SPA corresponding to each light-transmitting pattern 210, the interval g1 between the virtual surface VST and the emitting surface SE, the radius of curvature R of the curved shape, and the optimal viewing distance O. t ,y t ).

[0151] Furthermore, in order to derive the position EP(x) of each sub-pixel region in the coordinate system (x,y) with the curvature center CC of the curved shape as the reference point (0,0), p ,y p The method uses a baseline BL connecting the curvature center CC of the curved shape and the center point CV of the viewing area 20 to each other, and an interval length L along the luminous surface SE between each sub-pixel region EP. p .

[0152] Here, the interval length L along the luminous surface SE between the baseline BL connecting the curvature center CC of the curved shape and the center point CV of the viewing area 20 to each other, and each sub-pixel region EP, can be derived based on the equation used to obtain the arc length. pFor reference, in the following description, the unit of angle is radians.

[0153] Therefore, as shown in Equation 6 below, it can be based on the interval length L p The radius of curvature R of the curved shape is used to derive the EP(x) of each sub-pixel region. p ,y p The angle θ between the line connecting the curvature center CC of the curved shape and the baseline BL is... p .

[0154] Equation 6

[0155]

[0156] Furthermore, it is possible to base each sub-pixel region EP(x) on... p ,y p The angle θ between the line connecting the curvature center CC of the curved shape and the baseline BL is... p And the radius of curvature R of the curved shape, to derive the position EP(x) of each sub-pixel region in the coordinate system (x,y) with the curvature center CC of the curved shape as the reference point (0,0). p ,y p ).

[0157] As described above, according to each embodiment of this disclosure, the position TP(x) of the center point of the luminescent surface of each light-emitting pattern 210 is... t ,y t This can correspond to the optimal light path OPL for each sub-pixel region SPA corresponding to each light-transmitting pattern 210. As a result, light from each sub-pixel region SPA passes through the light-transmitting pattern 210 and is directed towards the viewing area 20 along the optimal light path OPL. Therefore, the display quality in the viewing area 30 can be improved.

[0158] In one example, each of the display devices 10 and 10' according to each embodiment of the present disclosure can be fabricated by deforming the display panel 100 and the light travel direction changing layer 200 from a planar shape to a curved shape.

[0159] Here, both the display panel 100 and the light travel direction changing layer 200 may have bending stress due to their curved shapes. Therefore, the position of the light transmission pattern of the light travel direction changing layer 200 may change due to the bending stress.

[0160] Figure 14 It is based on Figure 3 and 6 A schematic diagram showing the positional changes of the deformed light-transmitting pattern in each display device.

[0161] like Figure 14 As shown, when the light travel direction changing layer 200 deforms from a planar shape to a curved shape, the bending stress can change the position of the center point of the light-emitting surface of the light-transmitting pattern 210, so as to further move it away from the baseline BL.

[0162] That is, the center point TP(x) of the luminescent surface of each light-emitting pattern 210 on the curved virtual surface VST. t ,y t The interval length L between the baseline BL and the baseline BL t It can be derived as the interval length C_L between the baseline BL and the planar virtual surface VST. t With the center point TP(x) t ,y t The length of displacement due to bending stress BS_L t sum.

[0163] Therefore, when deriving the position of each light-transmitting pattern 210 for mutual alignment between the flat panel 100 and the planar light travel direction changing layer 200, a correction value based on the positional variation of the light-transmitting pattern 210 according to bending stress should be derived.

[0164] Figure 15 It is based on Figure 3 and 6 A schematic diagram of the positional correction of the curved light-transmitting pattern in each display device.

[0165] like Figure 15 As shown, the center point TP(x) of the luminescent surface of each light-transmitting pattern 210 on the planar virtual surface VST can be derived based on the luminescent surface SE. t ,y t The interval length C_L between the baseline BL and the baseline BL t .

[0166] That is, as shown in Equation 7 below, the coordinates TP(x,y) of the center point of the luminous surface of each light-emitting pattern 210 can be based on the coordinates TP(x,y) of the center point of the luminous surface of each light-emitting pattern 210 in a coordinate system (x,y) with the curvature center CC of the curved shape as the reference point (0,0). t ,y t To derive the center point TP(x) of the luminescent surface of each light-emitting pattern 210, t ,y t The angle θ between the line connecting the curvature center CC of the curved shape and the baseline BL is... t .

[0167] Equation 7

[0168]

[0169] Furthermore, as shown in Equation 8 below, the center point TP(x) of the luminous surface of each light-emitting pattern 210 on the virtual surface VST of the curved shape can be derived based on the radius of curvature R of the curved shape. t ,y t The interval length L between the baseline BL and the baseline t .

[0170] Equation 8

[0171] L t =(R+g1)θ t

[0172] Interval length C_L t This can correspond to the center point TP(x) of the luminescent surface of each light-emitting pattern 210 on the planar virtual surface VST. t ,y t The length between the position projected onto the luminous surface SE and the baseline BL. Therefore, as shown in Equation 9 below, it can be based on the center point TP(x) of the luminous surface of each light-transmitting pattern 210. t ,y t The angle θ between the line connecting the curvature center CC of the curved shape and the baseline BL is... t The interval length C_L is derived from the radius of curvature R of the curved shape. t .

[0173] Equation 9

[0174]

[0175] Next, the conditions for the widths of the emitting surface and the light incident surface of the light-transmitting pattern 210 according to each embodiment of the present disclosure will be described.

[0176] Figure 16 yes Figure 3 and 6 A schematic diagram of the width of the light-transmitting pattern in each display device.

[0177] like Figure 16 As shown and represented by Equation 10 below, the width TW of the light-emitting surface of each light-emitting pattern 210 can be derived based on the ratio between the width SPW of each sub-pixel region SPA and the width LW of the target biconvex lens LL corresponding to each sub-pixel region SPA, the first interval g1 between the light-emitting surfaces of the light-emitting array 130 and the light-emitting pattern 210, and the second interval g2 between the light-emitting array 130 and the lens layer 310.

[0178] Equation 10

[0179]

[0180] In addition, such as Figure 16 As shown, the light incident surface of each light-transmitting pattern 210 facing each sub-pixel region SPA can be opposite to the light-emitting surface and can have a width greater than that of the light-emitting surface. That is, the light-transmitting pattern 210 can be formed with a trapezoidal cross-section, wherein each of the two opposite sides is inclined downward and outward. In this way, it is advantageous that most of the light from each sub-pixel region SPA can be easily incident on the light-transmitting pattern 210.

[0181] However, the width BW of the light incident surface of each light-transmitting pattern 210 should be adjusted so that light from each sub-pixel region SPA corresponding to each light-transmitting pattern 210 will not be incident on sub-pixel regions SPA other than those corresponding to each light-transmitting pattern 210.

[0182] Therefore, as Figure 16 As shown and represented by Equation 11 below, the width BW of the light incident surface of each light-transmitting pattern 210 can be derived based on the interval SPI (sub-pixel spacing) between adjacent sub-pixel regions SPA, the first interval g1, and the third interval g3 between the light-emitting array 130 and the light incident surface of the light-transmitting pattern 210.

[0183] Equation 11

[0184]

[0185] In one example, because the display panel 100 and the light travel direction changing layer 200 are formed in a curved shape, the light incident surface of each light-transmitting pattern 210 may overlap only with a portion of the sub-pixel region SPA corresponding to each light-transmitting pattern 210, or may not overlap with the sub-pixel region SPA corresponding to each light-transmitting pattern 210. Therefore, a portion of the light from each sub-pixel region SPA may be blocked by the light-blocking pattern 220. Consequently, the brightness level at the respective edge portions of the display devices 10 and 10', which have outwardly curved shapes, may be reduced.

[0186] To prevent this, conditions for the interior angles of each light-transmitting pattern 210 can be derived.

[0187] Figure 17 This is a diagram showing a comparative example of the inner corners of a translucent pattern.

[0188] like Figure 17 As shown in the comparative example REF, due to the width of the light incident surface of each light-transmitting pattern 210' ( Figure 16 The width (BW) of each light-emitting surface is greater than the width of the 210' light-emitting surface of each light-transmitting pattern. Figure 16 In the context of TW), the interior angle between the light incident surface and the side surface between the light incident surface and the emitting surface. It becomes smaller.

[0189] That is, the interior angle between the side surface and the incident surface of the light. The larger the area, the smaller the width BW of the light incident surface. Therefore, the probability of light from the sub-pixel region SPA incident on the light-transmitting pattern 210' is reduced.

[0190] In particular, in the outwardly curved display panel 100, because each sub-pixel region SPA is positioned closer to each of the two opposite edge portions of the curved shape, it is more aligned with the center point of the viewing area. Figure 13 The optimal optical path (OPL) corresponding to the CV in the figure and at point (x) p ,y p ) at the luminous surface 130a ( Figure 13 The tangent line TL (in SE) is tangent to SE. Figure 18 Angle between ) The size decreases. Therefore, the overlap area between the corresponding sub-pixel regions SPA and the light-transmitting pattern 210' can be reduced. Here, with the inner corner of the light-transmitting pattern 210'... As the light intensity increases, the amount of light reaching the light-shielding pattern 220 from the sub-pixel region SPA increases. Therefore, the brightness at each of the two opposite edge portions may decrease.

[0191] To prevent this, according to each embodiment of this disclosure, the inner corner of each light-transmitting pattern 210' It can be smaller than the center point of the viewing area ( Figure 13 The optimal optical path OPL and emitting surface 130a corresponding to CV in the figure) Figure 13 The tangent line TL of SE in the middle Figure 18 Angle between )

[0192] Figure 18 yes Figure 3 and 6 A schematic diagram of the inner corners of the light-transmitting pattern in each display device.

[0193] like Figure 18 As shown, according to each embodiment of this disclosure, the interior angle between the light incident surface of each light-transmitting pattern TP and the side surface between the light incident surface and the light-emitting surface is... Smaller than the center point corresponding to the observation area ( Figure 13 The optimal optical path OPL and the emitting surface 130 (CV) in the CV) Figure 13 The angle between the tangents TL to SE) in the equation

[0194] Thus, the light transmission pattern (TP) corresponding to each sub-pixel region SPA ( Figure 17The 210' in the diagram can be deformed according to the position EP of each sub-pixel region SPA in the curved shape. Therefore, light from each sub-pixel region SPA can relatively easily enter the light-transmitting pattern (TP). Figure 17 On 210'). Therefore, it is possible to prevent a decrease in brightness due to the curved shape.

[0195] Although embodiments of the present disclosure have been described in more detail with reference to the accompanying drawings, the present disclosure is not necessarily limited to these embodiments. Various modifications can be made to the present disclosure without departing from the scope of the technical concept of the present disclosure. Therefore, the embodiments disclosed in this disclosure are not intended to limit the technical concept of the present disclosure, but rather to describe the present disclosure. The scope of the technical concept of the present disclosure is not limited by the embodiments. Therefore, it should be understood that the above embodiments are illustrative and not restrictive in all respects. The scope of protection of the present disclosure should be interpreted by the claims, and all technical concepts within the scope of the present disclosure should be interpreted as including within the scope of the present disclosure.

Claims

1. A display device, comprising: The display panel includes multiple sub-pixel regions for outputting light for displaying images; as well as A light travel direction changing layer is disposed on the display panel to change the travel direction of light emitted from each of the plurality of sub-pixel regions based on a predetermined viewing area. The light propagation direction changing layer includes: Multiple light-transmitting patterns, each corresponding to one of the multiple sub-pixel regions, are arranged in a matrix; and A light-blocking pattern is positioned between the plurality of light-transmitting patterns. In this configuration, each of the plurality of light-transmitting patterns is arranged such that the center point of the emitting surface of each light-transmitting pattern is located on the optimal light path connecting the center points of the sub-pixel region corresponding to that light-transmitting pattern and the center point of the viewing region to each other. In this configuration, the light incident surface of each light-transmitting pattern facing each sub-pixel region is opposite to the light-emitting surface of each light-transmitting pattern, and has a width greater than the width of the light-emitting surface of each light-transmitting pattern. The width of the light incident surface for each light-transmitting pattern is derived based on the following: The spacing between each sub-pixel region and the luminous surface of each light-transmitting pattern. The spacing between each sub-pixel region and the light incident surface of each light-transmitting pattern, and The spacing between adjacent sub-pixel regions.

2. The apparatus according to claim 1, wherein, The display panel includes a light-emitting array for emitting light corresponding to each of the plurality of sub-pixel regions. The display panel and the light travel direction changing layer each have a curved shape. The position of the center point of the luminescent surface of each light-transmitting pattern in a coordinate system is derived based on the following: the center of curvature of the curved shape is defined as the reference point. The slope of the optimal light path, The spacing between the virtual surface corresponding to the luminescent surface of the light-emitting pattern and the luminescent surface corresponding to the luminescent array. The radius of curvature of the curved shape, and The optimal viewing distance serves as the interval between the viewing area and the luminous surface of each translucent pattern.

3. The apparatus according to claim 2, wherein, The position of the center point of the luminescent surface of each light-transmitting pattern on the virtual surface is derived based on the following: The radius of curvature of the curved shape, and The spacing between the virtual surface and the corresponding light-emitting surface of the light-emitting array.

4. The apparatus according to claim 2, wherein, The following is the basis for deriving the position of the center point of the luminous surface of each light-transmitting pattern on the optimal light path: The slope of the optimal light path, The radius of curvature of the curved shape, and Optimal viewing distance.

5. The apparatus according to claim 4, wherein, The slope of the optimal light path is derived based on the following: The position of each sub-pixel region in a coordinate system that defines the center of curvature of the curved shape as a reference point. The radius of curvature of the curved shape, and Optimal viewing distance.

6. The apparatus according to claim 5, wherein, The position of each sub-pixel region in a coordinate system that defines the center of curvature of the curved shape as the reference point is derived as follows: The distance between the contact point and each sub-pixel region along the luminescent surface of each light-transmitting pattern, wherein at the contact point, a baseline connecting the center of curvature of the curved shape to the center point of the viewing area contacts the luminescent surface of each light-transmitting pattern, and The radius of curvature of a curved shape.

7. The apparatus according to claim 2, wherein, When the display panel and the light travel direction changing layer are aligned with each other in a planar shape and then deformed into a curved shape... The following is derived: the distance between the center point of the luminous surface of each light-transmitting pattern and the baseline connecting the center of curvature of the curved shape to the center point of the viewing area, based on the virtual surface along the planar shape: The angle between the baseline and the connecting line, wherein the connecting line connects the center of curvature of the curved shape and the center point of the luminous surface of each light-transmitting pattern to each other, and The radius of curvature of a curved shape.

8. The apparatus according to claim 7, wherein, The angle between the baseline and the connecting line is derived based on the position of the center point of the luminous surface of each light-transmitting pattern in a coordinate system that defines the curvature center of the curved shape as the reference point.

9. The apparatus according to claim 3, wherein, The device also includes a lens array disposed on the light travel direction changing layer. The lens array includes: The lens layer consists of multiple biconvex lenses arranged in a matrix; and A spacer layer is used to separate the lens layer and the light propagation direction changing layer from each other. The light-emitting surfaces of the plurality of light-transmitting patterns face the lens array.

10. The apparatus according to claim 9, wherein, At least two sub-pixel regions arranged in a row among the plurality of sub-pixel regions correspond to one of the target biconvex lenses among the plurality of biconvex lenses.

11. The apparatus according to claim 10, wherein, The width of the luminescent surface of one of the plurality of light-transmitting patterns is derived based on the following: The width of a sub-pixel region corresponding to a light-transmitting pattern, The width of the target biconvex lens corresponding to a sub-pixel region. The spacing between the light-emitting array and the light-emitting surface of the light-transmitting pattern, and The spacing between the light-emitting array and the lens layer.

12. The apparatus according to claim 1, wherein, The interior angle between the light incident surface of each light-transmitting pattern and the side connecting the light incident surface and the emitting surface of each light-transmitting pattern is smaller than the angle between the optimal light path of each sub-pixel region and the tangent line tangent to the emitting surface at the center point of the emitting surface.

13. The apparatus according to claim 12, wherein, The display panel and the light travel direction changing layer each have a curved shape that bulges outward toward the viewing area. Since each sub-pixel region is located closer to each of the two opposite edges of the display panel along the curvature direction of the curved shape, the angle between the optimal light path of each sub-pixel region and the tangent is smaller.

14. The apparatus according to any one of claims 2 to 12, wherein, The display panel and the light travel direction changing layer each have a curved shape that is concave towards the viewing area.

15. The apparatus according to claim 10, wherein, The edge of each biconvex lens corresponds to a black sub-pixel region.

Images