Display device and panel bonding system comprising the same

Abstract

The present invention relates to a display device and a panel bonding system including the same. A display device according to one embodiment includes a display panel comprising a plurality of subpixels, an optical member bonded on the display panel; and a display driving unit that receives relative placement position information of the subpixels for each of the stereoscopic lenses of the optical member from a bonding device for the optical member, and corrects image data so that a stereoscopic image is displayed in a display area of ​​the display panel according to the relative placement positions of the subpixels.

Description

Technology Field

[0001] The present invention relates to a display device and a panel bonding system including the same. Background Technology

[0002] Recently, stereoscopic image display devices and viewing angle control display devices are being developed that use optical components to divide and display an image of a display device across the space in front of the display device.

[0003] Stereoscopic display devices separate and display left-eye and right-eye images to create a sense of depth based on binocular parallax. Stereoscopic display devices are classified into the stereoscopic technique and the auto-stereoscopic technique. The binocular parallax technique utilizes the parallax images of the left and right eyes, which produce a greater stereoscopic effect; it includes both glasses-based and glasses-free methods, both of which are in practical use. The glasses-based method displays images by changing the polarization of the left and right parallax images, and creates stereoscopic images using polarized glasses or shutter glasses.

[0004] The glasses-free method forms optical components, such as a parallax barrier or a lenticular sheet, on a display device and separates the optical axes of left and right parallax images to create a stereoscopic image. Such a stereoscopic image display device can be manufactured using a bonding device that bonds a display panel and an optical component. The problem to be solved

[0005] The problem that the present invention aims to solve is to provide a display device and a method for manufacturing a display device that can improve the alignment efficiency of a display panel and an optical member by bonding an optical member to a display panel and setting viewing time information of pixels.

[0006] The problems of the present invention are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0007] A display device according to one embodiment for solving the above problem includes a display panel comprising a plurality of subpixels, an optical member bonded on the display panel, and a display driving unit that receives relative placement position information of the subpixels for each of the stereoscopic lenses of the optical member from a bonding device of the optical member, and corrects image data so that a stereoscopic image is displayed in a display area of ​​the display panel according to the relative placement positions of the subpixels.

[0008] The bonding device for the optical member includes an optical member bonding unit that bonds the optical member to the display panel, and an alignment detection unit that sequentially detects the placement position coordinates of the subpixels arranged in the display area, the tilt angles for the stereoscopic lenses, and the relative placement position coordinates of the subpixels for each of the stereoscopic lenses.

[0009] The above display driving unit calculates the viewing point of the subpixels according to the relative placement position of the subpixels for each of the stereoscopic lenses and sets a viewing point number, corrects the horizontal line-by-line placement position and alignment state of the image data according to the placement position coordinates of the subpixels and the viewing point number to generate corrected image data, and drives the display area so that a stereoscopic image according to the corrected image data is displayed.

[0010] The alignment detection unit may include a position coordinate detection unit that detects the placement position coordinates of each of the subpixels arranged in the display area, a tilt detection unit that detects the tilt angle of the stereoscopic lenses by analyzing an image pattern displayed on the display panel, and a pixel position detection unit that detects the relative placement position coordinates of the subpixels for each of the stereoscopic lenses according to the width and tilt angle information of each of the stereoscopic lenses.

[0011] The display driving unit may include a time point data generation unit that calculates the number of viewing time points for the subpixels according to the relative arrangement positions of the subpixels and sets a viewing time point number according to the number of viewing time points of the subpixels; an image data correction unit that corrects the arrangement position and alignment state of the image data by horizontal line according to the arrangement position of the subpixels and the viewing time point number to generate corrected image data; and a main processor that generates data voltages corresponding to the corrected image data and controls the display of the stereoscopic image in the display area.

[0012] The above-mentioned point-of-view data generation unit calculates the relative position values ​​of the above-mentioned subpixels and the number of viewing points per stereoscopic lens to calculate the target point of view for each subpixel, and can set the target point of view or the target point of view value for each subpixel, respectively, by excluding the decimal part from the calculated target point of view value.

[0013] The above-mentioned viewpoint data generation unit calculates the target viewpoint for each subpixel by calculating the relative position values ​​of the subpixels and the number of viewing viewpoints for each stereoscopic lens, and can render the target viewpoint for each subpixel by adding or subtracting a viewpoint number according to the decimal value of the target viewpoint for each subpixel.

[0014] A panel bonding system of one embodiment for solving the above problem includes a display device for displaying an image and a bonding device for bonding an optical member to the display device. The bonding device for the optical member includes an optical member bonding unit for bonding the optical member to a display panel of the display device, and an alignment detection unit for sequentially detecting the placement position coordinates of subpixels arranged in a display area of ​​the display panel, the tilt angles of the stereoscopic lenses of the optical member, and the relative placement position coordinates of the subpixels with respect to each of the stereoscopic lenses.

[0015] The above display device may include a display panel including the subpixels, the optical member bonded on the display panel, and a display driving unit that receives relative placement position information of the subpixels for each of the stereoscopic lenses of the optical member from a bonding device of the optical member, and corrects image data so that a stereoscopic image is displayed in a display area of ​​the display panel according to the relative placement position of the subpixels.

[0016] The optical member bonding portion can bond the optical member to the front surface of the display panel or the display area by aligning the alignment mark of the display panel with the flat portion of the optical member.

[0017] The alignment detection unit may include a position coordinate detection unit that detects the placement position coordinates of each of the subpixels arranged in the display area, a tilt detection unit that detects the tilt angle of the stereoscopic lenses by analyzing an image pattern displayed on the display panel, and a pixel position detection unit that detects the relative placement position coordinates of the subpixels for each of the stereoscopic lenses according to the width and tilt angle information of each of the stereoscopic lenses.

[0018] The above position coordinate detection unit can set a subpixel located at any one of the top-left, top-right, bottom-left, bottom-right, or center of the display area as a reference pixel, and sequentially detect the position coordinates of all remaining subpixels based on the reference pixel.

[0019] When the above-described display driving unit receives position coordinate information for all subpixels from the position coordinate detection unit, it can drive the display area of ​​the display panel so that an image of a preset image pattern is displayed in the display area.

[0020] The above position coordinate detection unit can detect the distance value between each subpixel and the stereoscopic lens using the position of each of the subpixels arranged in the first and second directions, the size of each subpixel, and the relative position coordinates of the subpixels.

[0021] The above position coordinate detection unit can calculate the relative position values ​​of each subpixel superimposed with each stereoscopic lens using the distance value between the subpixels and the stereoscopic lens and the remaining width of the stereoscopic lens.

[0022] The above display driving unit can calculate the viewing time of the subpixels and set a viewing time number according to the relative placement position of the subpixels for each of the stereoscopic lenses.

[0023] The above display driving unit can generate corrected image data by correcting the horizontal line-by-line placement position and alignment state of the image data according to the placement position coordinates of the subpixels and the viewing point number, and can drive the display area so that a stereoscopic image according to the corrected image data is displayed.

[0024] The display driving unit may include a time point data generation unit that calculates the number of viewing time points for the subpixels according to the relative arrangement positions of the subpixels and sets the viewing time point number according to the number of viewing time points of the subpixels, an image data correction unit that corrects the arrangement position and alignment state of the image data by horizontal line according to the arrangement position of the subpixels and the viewing time point number to generate corrected image data, and a main processor that generates data voltages corresponding to the corrected image data and controls the display of the stereoscopic image in the display area.

[0025] The above-mentioned point-of-view data generation unit calculates the relative position values ​​of the above-mentioned subpixels and the number of viewing points per stereoscopic lens to calculate the target point of view for each subpixel, and can set the target point of view or the target point of view value for each subpixel, respectively, by excluding the decimal part from the calculated target point of view value.

[0026] The above-mentioned viewpoint data generation unit calculates the target viewpoint for each subpixel by calculating the relative position values ​​of the subpixels and the number of viewing viewpoints for each stereoscopic lens, and can render the target viewpoint for each subpixel by adding or subtracting a viewpoint number according to the decimal value of the target viewpoint for each subpixel. Effects of the invention

[0027] According to the display device and panel bonding system including the same according to the embodiments, a display panel and an optical member are bonded first, and a stereoscopic image can be displayed by setting the viewing point information of the subpixels according to the alignment state of the subpixels and the optical member. In particular, by setting the viewing point information of the subpixels after bonding the display panel and the optical member, the bonding time of the display panel and the optical member can be shortened, and manufacturing costs can be reduced, thereby improving the bonding efficiency of the display panel and the optical member.

[0028] The effects according to the embodiments are not limited to those exemplified above, and a wider variety of effects are included in this specification. Brief explanation of the drawing

[0029] FIG. 1 is an exploded perspective view showing a display device according to one embodiment. Figure 2 is a combined configuration diagram of the display panel and optical member shown in Figure 1. FIG. 3 is a block diagram showing a panel bonding system including a display driving unit and an alignment detection unit according to one embodiment. FIG. 4 is a flowchart illustrating a method for setting viewing time information of subpixels according to one embodiment. Figure 5 is a plan view showing part of the subpixel arrangement structure of the display area. Figure 6 is a diagram showing an image pattern displayed in a display area to detect the tilt of an optical member. Figure 7 is another figure showing an image pattern displayed in a display area to detect the tilt of an optical member. Figure 8 is a diagram showing a method for setting position information per subpixel according to the tilt angle of the optical member and the lens width. Figure 9 is a diagram showing a method for setting viewing point information per subpixel according to the tilt angle of the optical member and the lens width. Figure 10 is a diagram specifically illustrating a method for setting viewing point information for each subpixel according to lens width and curvature. FIG. 11 is a drawing of another embodiment showing a method for setting viewing point information per subpixel according to the tilt angle of an optical member and the lens width. FIG. 12 is an exploded perspective view showing a display device according to another embodiment. FIG. 13 is a planar configuration diagram showing the display panel and optical member respectively illustrated in FIG. 12. FIG. 14 is a plan view showing a partial subpixel arrangement structure of a display area according to another embodiment. FIG. 15 is a drawing of another embodiment showing a method for setting viewing point information per subpixel according to the tilt angle of an optical member and the lens width. FIG. 16 is an exemplary drawing showing an automobile instrument panel and center fascia including a display device according to one embodiment. FIG. 17 is an example drawing showing a watch-type smart device including a display device according to one embodiment. FIG. 18 is an exemplary drawing showing a glasses-type virtual reality device including a display device according to one embodiment. FIG. 19 is an exemplary drawing showing a transparent display device including a display device according to one embodiment. Specific details for implementing the invention

[0030] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims.

[0031] When elements or layers are referred to as being "on" another element or layer, this includes cases where another layer or element is interposed directly on or in the middle of another element. Throughout the specification, the same reference numerals refer to the same components. Shapes, sizes, ratios, angles, numbers, etc., disclosed in the drawings for describing embodiments are exemplary and therefore the invention is not limited to the depicted details.

[0032] Although terms such as "first," "second," etc., are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used merely to distinguish one component from another. Therefore, it goes without saying that the first component mentioned below may also be the second component within the technical scope of the present invention.

[0033] The features of each of the various embodiments of the present invention may be combined or combined with one another, either partially or wholly, and may technically enable various interlocking and operation. Each embodiment may be implemented independently of one another or may be implemented together in an associated relationship.

[0034] Specific embodiments will be described below with reference to the attached drawings.

[0035] FIG. 1 is an exploded perspective view showing a display device according to one embodiment. FIG. 2 is a combined configuration diagram of a display module and an optical member shown in FIG. 1.

[0036] Referring to FIGS. 1 and 2, the display device can be implemented as a flat panel display device such as a Liquid Crystal Display (LCD), a Field Emission Display (FED), a Plasma Display Panel (PDP), and an Organic Light Emitting Display (OLED).

[0037] The display device may be a stereoscopic image display device comprising a display module (100) and an optical member (200). The stereoscopic image display device may display a left-eye image and a right-eye image separately on the front of the display device to create a sense of stereoscopicity through binocular parallax. Furthermore, the stereoscopic image display device may provide multiple viewing angle images separately on the front of the display device to show different images for each different viewing angle.

[0038] The stereoscopic image display device may be a light field display device that places an optical member (200) on the front of a display module (100) so that different image information is visible to both eyes of a viewer. The light field display device can create a stereoscopic image by generating a light field through the display module (100) and the three-dimensional optical member (200). As described below, light rays generated from each pixel of the display module (100) of the light field display device form a light field directed toward a specific direction (a specific viewing angle and / or a specific viewpoint) by means of a stereoscopic lens, a pinhole, or a barrier, and accordingly, stereoscopic image information corresponding to the specific direction can be provided to the viewer.

[0039] The display module (100) may include a display panel (110), a display driving unit (120), and a circuit board (not shown).

[0040] The display panel (110) may include a display area (DA) and a non-display area (NDA). The display area (DA) may include data lines, scan lines, voltage supply lines, and a plurality of pixels connected to the corresponding data lines and scan lines. For example, the scan lines may extend in a first direction (X-axis direction) and be spaced apart from each other in a second direction (Y-axis direction). The data lines and voltage supply lines may extend in a second direction (Y-axis direction) and be spaced apart from each other in a first direction (X-axis direction).

[0041] Each pixel may be connected to at least one scan line, a data line, and a power supply line. Each pixel may include thin-film transistors comprising a driving transistor and at least one switching transistor, a light-emitting element, and a capacitor. Each pixel may receive a data voltage of a data line when a scan signal is applied from a scan line, and may emit light by supplying a driving current to a light-emitting element according to the data voltage applied to a gate electrode.

[0042] A non-display area (NDA) may surround a display area (DA) at the edge of a display panel (110). The non-display area (NDA) may include a scan driver (not shown) that applies scan signals to scan lines, and pads (not shown) connected to a display driver (120). For example, the display driver (120) may be positioned on one side of the non-display area (NDA), and the pads may be positioned on one edge of the non-display area (NDA) where the display driver (120) is positioned.

[0043] At least one alignment mark may be placed on the outer edge of the display area (DA) of the display panel (110), i.e., the non-display area (NDA). Accordingly, the optical member bonding device of the panel bonding system can improve the alignment precision of the optical member (200) by aligning the alignment mark on the outer edge of the display area (DA) with the flat portion (210) of the optical member (200).

[0044] The optical member bonding device may include an optical member bonding unit that bonds an optical member (200) onto a display panel (110), and an alignment detection unit that calculates relative placement position information of subpixels for each of the stereoscopic lenses (220).

[0045] The alignment detection unit of the panel bonding system detects the placement position coordinates of each pixel, for example, sub-pixels, of the display area (DA) while the optical member (200) is bonded to the front of the display area (DA). Then, the alignment detection unit detects the tilt angle of the stereoscopic lenses (220) of the optical member (200) and detects the relative placement position of the sub-pixels with respect to the stereoscopic lenses (220) according to the width and tilt angle information of each stereoscopic lens (220). The alignment detection unit can transmit the relative placement position information of the sub-pixels with respect to each stereoscopic lens (220) to the display driving unit (120) of the display module (100).

[0046] The display driver (120) can output signals and voltages to drive the display panel (110). The display driver (120) can supply data voltages to data lines. The display driver (120) can supply power voltage to power supply lines and supply scan control signals to the scan driver. For example, the display driver (120) can be formed as an integrated circuit (IC) and placed in the non-display area (NDA) of the display panel (110) using a Chip on Glass (COG) method, a Chip on Plastic (COP) method, or an ultrasonic bonding method. As another example, the display driver (120) can be mounted on a circuit board (not shown) and connected to the pads of the display panel (110).

[0047] The display driving unit (120) receives relative placement position information of subpixels for each of the stereoscopic lenses (220) from the alignment detection unit of the optical member bonding device. The display driving unit (120) calculates a viewing time for the subpixels based on the relative placement position of the subpixels for each of the stereoscopic lenses (220) and sets a viewing time number based on the viewing time of each subpixel. Then, based on the placement position coordinates and viewing time number of each subpixel, it corrects the horizontal line-by-line placement position and alignment state of the image data input from the outside to generate corrected image data. Accordingly, the display driving unit (120) generates data voltages corresponding to the corrected image data and supplies them to the data lines, thereby enabling the image to be displayed according to the relative placement position of the subpixels for the stereoscopic lenses (220).

[0048] An optical member (200) may be placed on a display module (100). The optical member (200) may be attached to one side of the display module (100) through an adhesive member. Such an optical member (200) may be bonded to the display module (100) by a panel bonding system. For example, the optical member (200) may be implemented as a lenticular lens sheet including stereoscopic lenses (220). As another example, the stereoscopic lenses (220) may be implemented as liquid crystal lenses that control liquid crystals in a liquid crystal layer to form lenses. When the stereoscopic lenses (220) are implemented as a lenticular lens sheet, the stereoscopic lenses (220) may be placed on a flat portion (210).

[0049] The flat portion (210) may be placed directly on the upper surface of the display module (100). For example, one side of the flat portion (210) facing the display module (100) and the other side of the flat portion (210) opposite to the one side of the flat portion (210) may be parallel to each other. The flat portion (210) may output light incident from the display module (100) as is. The direction of light passing through one side of the flat portion (210) may coincide with the direction of light passing through the other side of the flat portion (210). The flat portion (210) may be formed integrally with the stereoscopic lenses (220), but is not necessarily limited thereto.

[0050] Stereoscopic lenses (220) are placed on a flat section (210) to change the direction of light incident from the display module (100). Light incident from the display module (100) can pass through the flat section (210) and reach the stereoscopic lenses (220). The stereoscopic lenses (220) can be tilted at a predetermined angle from one side of the display module (100). For example, the stereoscopic lenses (220) may be slanted lenses tilted at a predetermined angle relative to one side of each of the plurality of pixels of the display panel (110). Here, the predetermined angle may be designed so as to prevent the color band of the display device from being visible to the viewer.

[0051] The stereoscopic lenses (220) may be formed integrally with the flat portion (210). For example, the flat portion (210) may be formed in relief on the upper surface of the flat portion (210). The stereoscopic lenses (220) may be half-cylindrical lenses, but are not necessarily limited thereto. As another example, the stereoscopic lenses (220) may be implemented as Fresnel lenses. As yet another example, the stereoscopic lenses (220) may be manufactured separately from the flat portion (210) and then attached to the flat portion (210).

[0052] FIG. 3 is a block diagram showing a panel bonding system including a display driving unit and an alignment detection unit according to one embodiment.

[0053] Referring to FIG. 3, the bonding device includes an alignment detection unit (300) that sequentially hides the placement position coordinate information of subpixels placed on a display panel (110), the tilt angle of the stereoscopic lenses (220) of the optical member (200), and the relative placement position information of the subpixels for each of the stereoscopic lenses (220).

[0054] The alignment detection unit (300) includes a position coordinate detection unit (310), a tilt detection unit (320), and a pixel position detection unit (330).

[0055] Specifically, the position coordinate detection unit (310) detects the placement position coordinates of each subpixel arranged in the display area (DA) while the optical member (200) is bonded to the front of the display panel (110).

[0056] The tilt detection unit (320) analyzes the image pattern displayed on the display panel (110) to detect the tilt angle for the stereoscopic lenses (220) of the optical member (200).

[0057] The pixel position detection unit (330) detects the relative placement position coordinates of subpixels for each stereoscopic lens (220) according to the width and tilt angle information of each stereoscopic lens (220). The pixel position detection unit (330) transmits the detected relative placement position coordinate information of subpixels to the display driving unit (120) of the display module (100).

[0058] The display driving unit (120) of the display module (100) sets the viewing time and viewing time number of each subpixel according to the relative placement position coordinates of the subpixels for each stereoscopic lens (220). The display driving unit (120) corrects the image data according to the placement position coordinates and viewing time number of each subpixel, and controls each subpixel so that the image according to the corrected image data is displayed on the display panel (110).

[0059] The display driving unit (120) includes a viewpoint data generation unit (121), an image data correction unit (122), and a main processor (123).

[0060] The viewpoint data generation unit (121) calculates the number of viewing points for each subpixel according to the relative placement positions of the subpixels for the stereoscopic lenses (220), and sets a viewing point number according to the number of viewing points for each subpixel.

[0061] The image data correction unit (122) corrects the horizontal line-by-line placement position and alignment state of the image data input from the outside according to the placement position of each subpixel and the viewing time number, thereby generating corrected image data.

[0062] The main processor (123) generates data voltages corresponding to the correction image data and supplies them to the data lines, thereby controlling the display of the image according to the relative placement positions of the subpixels for the stereoscopic lenses (220).

[0063] FIG. 4 is a flowchart illustrating a method for setting viewing time information of subpixels according to one embodiment.

[0064] Referring to FIG. 4, the bonding device of the bonding system aligns the alignment mark of the display panel (110) with the flat portion (210) of the optical member (200) and bonds the optical member (200) to the front surface or display area (DA) of the display panel (110). (ST1)

[0065] The position coordinate detection unit (310) of the alignment detection unit (300) detects the placement position coordinates of each of the subpixels arranged in the display area (DA) when the optical member (200) is bonded to the front of the display panel (110) or the front of the display area (DA).

[0066] Figure 5 is a plan view showing part of the subpixel arrangement structure of the display area.

[0067] Referring to FIG. 5, a plurality of unit pixels (UP) are arranged and formed in the display area (DA) of the display panel (110), and each unit pixel (UP) includes a plurality of sub-pixels (SP1, SP2, SP3). Each sub-pixel (SP1, SP2, SP3) may be arranged along a plurality of rows and a plurality of columns. For example, the plurality of sub-pixels (SP1, SP2, SP3) may be arranged and formed in a vertical or horizontal stripe structure. At this time, the display area (DA) of the display panel (110) may include more unit pixels (UP) as the resolution of the display device increases.

[0068] To explain more specifically, each unit pixel (UP) may include first to third subpixels (SP1, SP2, SP3) that display different colors. The first to third subpixels (SP1, SP2, SP3) may be formed by the intersection of n (n is a natural number) data lines and m (m is a natural number) scan lines. Each of the plurality of subpixels (SP1, SP2, SP3) may include a light-emitting element and a pixel circuit. The pixel circuit may include a driving transistor, at least one switching transistor, and at least one capacitor to drive the light-emitting element of each of the plurality of subpixels.

[0069] Each of the plurality of unit pixels (UP) may include one first subpixel (SP1), two second subpixels (SP2), and one third subpixel (SP3), but is not necessarily limited thereto. The first subpixel (SP1) may be a red subpixel, the second subpixel (SP2) may be a green subpixel, and the third subpixel (SP3) may be a blue subpixel. Each of the first to third subpixels (SP1, SP2, SP3) may receive a data signal including luminance information of red, green, or blue light from a display driving unit (120) and output light of the corresponding color.

[0070] The position coordinate detection unit (310) sequentially detects the position coordinates of each subpixel (SP1, SP2, SP3) included in the display area (DA) while the optical member (200) is bonded to the front surface of the display area (DA). (ST1)

[0071] For example, the position coordinate detection unit (310) can set the first subpixel of the first unit pixel placed at the top left as the reference pixel, and set the position coordinates (x,y) of the first subpixel of the first unit pixel to (0.0). Then, based on the first subpixel of the first unit pixel which is the reference pixel, the position coordinates (x,y) of all subpixels (SP1, SP2, SP3) included in the display area (DA) can be detected sequentially up to the last subpixel. At this time, the position coordinate detection unit (310) may set a subpixel placed at any one of the top right, bottom left, bottom right, or center of the display area (DA) as the reference pixel in addition to the top left, and sequentially detect the position coordinates (x,y) of all remaining subpixels. The position coordinate detection unit (310) transmits the position coordinate information for all subpixels to the display driving unit (120) of the display module (100).

[0072] FIG. 6 is a diagram showing an image pattern displayed in a display area to detect the tilt of an optical member. FIG. 7 is another diagram showing an image pattern displayed in a display area to detect the tilt of an optical member.

[0073] Referring to FIGS. 6 and 7, when position coordinate information for all subpixels is input from the position coordinate detection unit (310), the display driving unit (120) of the display module (100) drives the display panel (110) so that an image of a preset image pattern is displayed in the display area (DA). (ST2)

[0074] The pattern image displayed in the display area (DA) can be displayed in a tilted state according to the tilt angle of the stereoscopic lenses (220) of the optical member (200), as illustrated in FIG. 6, FIG. 7, etc.

[0075] Figure 8 is a diagram showing a method for setting position information per subpixel according to the tilt angle of the optical member and the lens width.

[0076] Referring to FIG. 8, the tilt detection unit (320) analyzes the tilt angle (tθ) of the image pattern displayed on the display panel (110) and detects the tilt angle for each stereoscopic lens (LS1 to LS3) corresponding to the tilt angle of the image pattern (ST3).

[0077] The pixel position detection unit (330) can calculate the width (Lw) of each stereoscopic lens (LS1, LS2) through the tilt angle (tθ) information and pattern image of each stereoscopic lens (LS1, LS2). The width (Lw) of each stereoscopic lens (220) may be pre-set and input.

[0078] The pixel position detection unit (330) detects the relative placement position coordinates of sub-pixels (SP1, SP2, SP3) that overlap with each stereoscopic lens (LS1, LS2) according to the width (Lw) and tilt angle (tθ) information of each stereoscopic lens (LS1, LS2). (ST4)

[0079] The relative position coordinates of subpixels (SP1, SP2, SP3) that overlap with each stereoscopic lens (LS1, LS2) are repeatedly detected in the width (Lw) direction of each stereoscopic lens (LS1, LS2) or in the first direction (X-axis direction). This can be expressed as shown in Equation 1 below.

[0080] [Mathematical Formula 1]

[0081] Relative position coordinates = rows × pixelsize × tan(slanted angle)

[0082] Here, rows is the horizontal line number, pixelsize is the width or size of each subpixel, and tan(slanted angle) is the slant angle (tθ).

[0083] When the detection of the placement position coordinates of the subpixels arranged on the first horizontal line is completed by repeating in the first direction (X-axis direction), the relative placement position coordinates of the subpixels (SP1, SP2, SP3) arranged on another horizontal line in the second direction (Y-axis direction) are detected sequentially. Accordingly, the process of detecting the relative position coordinates of the subpixels arranged on the entire horizontal line can be repeated to detect the placement position coordinates of all subpixels (SP1, SP2, SP3) of the display area (DA).

[0084] The pixel position detection unit (330) can detect the distance between each subpixel and the stereoscopic lens using the subpixel position in the second direction (Y-axis direction), the size of each subpixel, and the relative position coordinate values ​​of the subpixels, as illustrated by the following mathematical formula 2.

[0085] [Mathematical Formula 2]

[0086] Distance between each subpixel and the stereo lens = (cols × pixelsize) - relative position coordinates

[0087] Here, cols is subpixel location information in the second direction (Y-axis direction), pixelsize is the width or size of each subpixel, and may be relative location coordinates for each subpixel according to the above mathematical formula 1.

[0088] The pixel position detection unit (330) can calculate the relative position values ​​of each subpixel (SP1, SP2, SP3) that overlaps with each stereoscopic lens (LS1, LS2) using the distance value between each subpixel (SP1, SP2, SP3) and the stereoscopic lens (LS1, LS2) and the remaining width of the stereoscopic lens, as illustrated in Equation 3 below.

[0089] [Mathematical Formula 3]

[0090] Relative position value of each subpixel = Distance value between each subpixel and the stereo lens / Remaining width of the stereo lens

[0091] The pixel position detection unit (330) transmits the relative position values ​​of the sub-pixels (SP1, SP2, SP3) for each of the stereoscopic lenses (LS1, LS2) to the display driving unit (120) of the display module (100).

[0092] FIG. 9 is a diagram showing a method for setting viewing point information per subpixel according to the tilt angle of an optical member and the lens width. FIG. 10 is a diagram specifically showing a method for setting viewing point information per subpixel according to the lens width and curvature.

[0093] Referring to FIGS. 9 and 10, the viewpoint data generation unit (121) calculates a viewing point for each subpixel (SP1, SP2, SP3) according to the relative arrangement position of the subpixels (SP1, SP2, SP3) for each stereoscopic lens (LS1, LS2), and sets a viewing point number according to the viewing point of each subpixel (SP1, SP2, SP3). (ST5)

[0094] The viewpoint data generation unit (121) calculates the target viewpoint for each subpixel (SP1, SP2, SP3) by calculating the relative position values ​​of each subpixel and the number of viewing views for each stereoscopic lens (LS1, LS2) as illustrated in the following mathematical formula 4.

[0095] [Mathematical Formula 4]

[0096] Target viewpoint for each subpixel (SP1, SP2, SP3) = Relative position value of each subpixel × Number of viewing views

[0097] When the relative position values ​​of each subpixel and the number of viewing points for each stereoscopic lens (LS1, LS2) are multiplied, the target viewpoint (or target viewpoint value) for each subpixel (SP1, SP2, SP3) can be calculated as a number with decimal points. At this time, the viewpoint data generation unit (121) can set the target viewpoint or target viewpoint value for each subpixel (SP1, SP2, SP3) as the viewing point, excluding the decimal points.

[0098] In contrast, the time point data generation unit (121) can render the target time point for each sub-pixel (SP1, SP2, SP3) and correct the target time point for each sub-pixel (SP1, SP2, SP3) by adding or subtracting the time point number according to the decimal value of the target time point for each sub-pixel (SP1, SP2, SP3).

[0099] The image data correction unit (122) generates corrected image data by correcting the horizontal line-by-line placement position and alignment state of the image data input from the outside according to the placement position of each sub-pixel and the viewing time number. Then, the main processor (123) generates data voltages corresponding to the corrected image data and supplies them to the data lines, thereby controlling the display of the image according to the relative placement position of the sub-pixels with respect to the stereoscopic lenses (220). (ST6)

[0100] FIG. 11 is a drawing of another embodiment showing a method for setting viewing point information per subpixel according to the tilt angle of an optical member and the lens width.

[0101] In addition to FIG. 9, as illustrated in FIG. 11, the pixel position detection unit (330) can detect the relative position coordinates of subpixels (SP1, SP2, SP3) that overlap with each stereoscopic lens (LS1, LS2, LS3) according to the width (Lw) and tilt angle (tθ) information of each stereoscopic lens (LS1, LS2, LS3). Accordingly, the pixel position detection unit (330) can calculate the relative position values ​​of each subpixel (SP1, SP2, SP3) that overlap with each stereoscopic lens (LS1, LS2, LS3) using the distance value between each subpixel (SP1, SP2, SP3) and each stereoscopic lens (LS1, LS2, LS3) and the remaining width of the stereoscopic lens.

[0102] As illustrated in FIG. 11, the viewpoint data generation unit (121) can calculate the target viewpoint for each subpixel (SP1, SP2, SP3) by calculating the relative position values ​​of each subpixel and the number of viewing viewpoints for each stereoscopic lens (LS1, LS2, LS3). In particular, the target viewpoint for each subpixel (SP1, SP2, SP3) can be calculated by calculating the number of viewing viewpoints for each stereoscopic lens (LS1, LS2, LS3) according to the width (Lw) and tilt angle (tθ) of each stereoscopic lens (LS1, LS2, LS3).

[0103] FIG. 12 is an exploded perspective view showing a display device according to another embodiment. FIG. 13 is a planar configuration view showing the display panel and optical member respectively shown in FIG. 12.

[0104] Referring to FIGS. 12 and 13, the display device may be implemented as a flat panel display device such as an Organic Light Emitting Display (OLED), and may be a stereoscopic image display device comprising a display module (100) and an optical member (200).

[0105] The display module (100) may include a display panel (110), a display driving unit (120), and a circuit board (130).

[0106] The display panel (110) may include a display area (DA) and a non-display area (NDA). The display area (DA) may include data lines, scan lines, voltage supply lines, and a plurality of pixels connected to the corresponding data lines and scan lines.

[0107] An optical member (200) may be placed on a display module (100). The optical member (200) may be attached to one side of the display module (100) through an adhesive member. The optical member (200) may be bonded to the display module (100) by a panel bonding device. For example, the optical member (200) may be implemented as a lenticular lens sheet comprising a plurality of stereoscopic lenses (LS1 to LS3).

[0108] FIG. 14 is a plan view showing a partial subpixel arrangement structure of a display area according to another embodiment.

[0109] Referring to FIG. 14, the display area (DA) of the display panel (110) may include a plurality of unit pixels (UP) or a plurality of subpixels (SP1, SP2, SP3). The plurality of subpixels (SP1, SP2, SP3) may be arranged in a pentile matrix form. The display area (DA) may include more unit pixels (UP) as the resolution of the display device increases.

[0110] Specifically, each of the plurality of unit pixels (UP) may include first to third subpixels (SP1, SP2, SP3) arranged in a Pentile matrix form. The plurality of first to third subpixels (SP1, SP2, SP3) may be formed by the intersection of n (n is a natural number) data lines and m (m is a natural number) scan lines.

[0111] Each of the plurality of subpixels arranged in a pentile matrix form may include a light-emitting element and a pixel circuit. The pixel circuit may include a driving transistor, at least one switching transistor, and at least one capacitor to drive the light-emitting element of each of the plurality of subpixels.

[0112] Each of the plurality of unit pixels (UP) may include one first subpixel (SP1), two second subpixels (SP2), and one third subpixel (SP3), but is not necessarily limited thereto. Here, the first subpixel (SP1) may be a red subpixel, the second subpixel (SP2) may be a green subpixel, and the third subpixel (SP3) may be a blue subpixel. The size of the aperture area of ​​each of the first to third subpixels (SP1, SP2, SP3) may be determined according to the luminance of the corresponding light. Accordingly, the size of the aperture area of ​​each of the first to third subpixels (SP1, SP2, SP3) may be adjusted to realize white light by mixing the light emitted from each of the plurality of light-emitting layers. Each of the first to third subpixels (SP1, SP2, SP3) may receive a data signal including luminance information of red, green, or blue light from the display driving unit (120) and output light of the corresponding color.

[0113] FIG. 15 is a drawing of another embodiment showing a method for setting viewing point information per subpixel according to the tilt angle of an optical member and the lens width.

[0114] Referring to FIG. 15, the tilt detection unit (320) of the alignment detection unit (300) analyzes the tilt angle (tθ) of the image pattern displayed on the display panel (110) and detects the tilt angle for each stereoscopic lens (LS1, LS2, LS3) corresponding to the tilt angle of the image pattern. Accordingly, the pixel position detection unit (330) detects the relative placement position coordinates of subpixels (SP1, SP2, SP3) that overlap with each stereoscopic lens (LS1, LS2, LS3) based on the width (Lw) and tilt angle (tθ) information of each stereoscopic lens (LS1, LS2, LS3).

[0115] Additionally, the pixel position detection unit (330) can calculate the distance and relative position values ​​between each subpixel and the stereoscopic lens using the subpixel position in the second direction (Y-axis direction), the size of each subpixel, and the relative position coordinate values ​​of the subpixels. The relative position values ​​of the subpixels (SP1, SP2, SP3) for each stereoscopic lens (LS1, LS2, LS3) are provided to the display driving unit (120) of the display module (100).

[0116] The viewpoint data generation unit (121) of the display driving unit (120) calculates the viewing point for each subpixel (SP1, SP2, SP3) according to the relative arrangement position of the subpixels (SP1, SP2, SP3) for each stereoscopic lens (LS1, LS2, LS3), and sets a viewing point number according to the viewing point of each subpixel (SP1, SP2, SP3). (ST5) To this end, the viewpoint data generation unit (121) calculates the target viewpoint for each subpixel (SP1, SP2, SP3) by calculating the relative position value of each subpixel and the number of viewing points for each stereoscopic lens (LS1, LS2, LS3).

[0117] The image data correction unit (122) generates corrected image data by correcting the horizontal line-by-line placement position and alignment state of the image data input from the outside according to the placement position and viewing point number of each sub-pixel. In this way, according to the display device and panel bonding system including the same according to the embodiment, the display panel (110) and the optical member (200) are bonded first, and the viewing point information of the sub-pixels (SP1, SP2, SP3) is set according to the alignment state of the sub-pixels (SP1, SP2, SP3) and the stereoscopic lenses (220) so that a stereoscopic image can be displayed. In particular, by setting the viewing point information of the sub-pixels (SP1, SP2, SP3) after the bonding of the display panel (110) and the optical member (200), the bonding time of the display panel (110) and the optical member (200) is shortened and the manufacturing cost is reduced, thereby improving the bonding efficiency of the display panel (110) and the optical member (200).

[0118] FIG. 16 is an exemplary drawing showing an automobile instrument panel and center fascia including a display device according to one embodiment.

[0119] Referring to FIG. 16, the display device in which the display module (100) and the optical member (200) of the present invention are bonded together may be applied to the instrument panel (10_a) of a vehicle, applied to the center fascia (10_b) of a vehicle, or applied to the CID (Center Information Display, 10_c) placed on the dashboard of a vehicle. In addition, the display device according to one embodiment may be applied to a room mirror display (10_d, 10_e) that replaces the side mirror of a vehicle, a navigation device, etc.

[0120] FIG. 17 is an exemplary drawing showing a watch-type smart device including a display device according to one embodiment. FIG. 18 is an exemplary drawing showing a glasses-type virtual reality device including a display device according to one embodiment.

[0121] FIG. 18 illustrates a glasses-type virtual reality device (1) including glasses frame temples (30a, 30b). A glasses-type virtual reality device (1) according to one embodiment may include a display device (10_1) of one embodiment, a left eye lens (10a), a right eye lens (10b), a support frame (20), glasses frame temples (30a, 30b), a reflective member (40), and a display device housing (50).

[0122] A glasses-type virtual reality device (1) according to one embodiment may be applied to a head-mounted display that includes a head-mounting band that can be mounted on the head instead of glasses frame temples (30a, 30b). That is, the glasses-type virtual reality device (1) according to one embodiment is not limited to that shown in FIG. 19 and can be applied in various forms to various other electronic devices.

[0123] The display device housing (50) may include a display device (10_1), such as a micro LED display device, and a reflective member (40). An image displayed on the display device (10_1) may be reflected from the reflective member (40) and provided to the user's right eye through the right eye lens (10b). As a result, the user can view a virtual reality image displayed on the display device through their right eye.

[0124] FIG. 18 illustrates that the display device housing (50) is positioned at the right end of the support frame (20), but the embodiments of this specification are not limited thereto. For example, the display device housing (50) may be positioned at the left end of the support frame (20), in which case the image displayed on the display device (10_1) may be reflected from the reflective member (40) and provided to the user's left eye through the left eye lens (10a). As a result, the user can view the virtual reality image displayed on the display device (10_1) through the left eye. Alternatively, the display device housing (50) may be positioned at both the left end and the right end of the support frame (20), in which case the user can view the virtual reality image displayed on the display device (10_1) through both the left eye and the right eye.

[0125] FIG. 19 is an exemplary drawing showing a transparent display device including a display device according to one embodiment.

[0126] Referring to FIG. 19, a display device in which a display module (100) and an optical member (200) are bonded together can be applied to a transparent display device. The transparent display device can display an image (IM) and transmit light simultaneously. Therefore, a user located in front of the transparent display device can not only view the image (IM) displayed on the display module (100), but also see an object (RS) or background located on the back of the transparent display device. When a display device in which a display module (100) and an optical member (200) are bonded together is applied to a transparent display device, the display panel (110) of the display device may include a light-transmitting portion capable of transmitting light, or be formed of a material capable of transmitting light.

[0127] Although embodiments of the present invention have been described above with reference to the attached drawings, those skilled in the art will understand that the present invention may be implemented in other specific forms without changing the technical concept or essential features thereof. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. Explanation of the symbols

[0128] 100: Display Module 110: Display Panel 120: Display drive unit 121: Time point data generation unit 122: Image data correction unit 123: Main processor 130: Circuit board 200: Optical component 210: Flat section 220: Stereo lenses 300: Alignment detection unit 310: Position coordinate detection unit 320: Tilt detection unit 330: Pixel position detection unit

Claims

Claim 1 A display device comprising: a display panel including a plurality of subpixels; an optical member bonded to the display panel; and a display driving unit that receives relative placement position information of subpixels for each of the stereoscopic lenses of the optical member from a bonding device of the optical member and corrects image data so that a stereoscopic image is displayed in a display area of ​​the display panel according to the relative placement position of the subpixels, wherein the bonding device of the optical member includes an optical member bonding unit that bonds the optical member to the display panel; and an alignment detection unit that sequentially detects the placement position coordinates of the subpixels arranged in the display area, the tilt angle for the stereoscopic lenses, and the relative placement position coordinates of the subpixels for each of the stereoscopic lenses. Claim 2 delete Claim 3 A display device according to claim 1, wherein the display driving unit calculates a viewing time of the subpixels according to the relative arrangement position of the subpixels for each of the stereoscopic lenses and sets a viewing time number, corrects the arrangement position and alignment state of the image data by horizontal line according to the arrangement position coordinates of the subpixels and the viewing time number to generate corrected image data, and drives the display area so that a stereoscopic image according to the corrected image data is displayed. Claim 4 A display device according to claim 1, wherein the alignment detection unit comprises: a position coordinate detection unit that detects the placement position coordinates of each of the subpixels arranged in the display area; a tilt detection unit that detects the tilt angle for the stereoscopic lenses by analyzing an image pattern displayed on the display panel; and a pixel position detection unit that detects the relative placement position coordinates of the subpixels for each of the stereoscopic lenses according to the width and tilt angle information of each of the stereoscopic lenses. Claim 5 In claim 4, the display driving unit comprises: a viewpoint data generation unit that calculates the number of viewing points for the subpixels according to the relative arrangement positions of the subpixels and sets a viewing point number according to the number of viewing points of the subpixels; an image data correction unit that corrects the arrangement position and alignment state of the image data by horizontal line according to the arrangement position of the subpixels and the viewing point number to generate corrected image data; and a main processor that generates data voltages corresponding to the corrected image data and controls the display of the stereoscopic image in the display area. Claim 6 In claim 5, the point-time data generation unit calculates the relative position values ​​of the subpixels and the number of viewing points per stereoscopic lens to calculate a target point for each subpixel, and sets the target point for each subpixel or the target point value as the respective viewing point. Claim 7 In claim 5, the viewpoint data generation unit calculates the relative position values ​​of the subpixels and the number of viewing viewpoints per stereoscopic lens to calculate the target viewpoint for each subpixel, and the display device renders the target viewpoint for each subpixel by adding or subtracting a viewpoint number according to the decimal value of the target viewpoint for each subpixel. Claim 8 A panel bonding system comprising: a display device for displaying an image; and a bonding device for bonding an optical member to the display device, wherein the bonding device for the optical member includes an optical member bonding unit for bonding the optical member to a display panel of the display device; and an alignment detection unit for sequentially detecting the placement position coordinates of subpixels arranged in a display area of ​​the display panel, the tilt angle of the stereoscopic lenses of the optical member, and the relative placement position coordinates of the subpixels with respect to each of the stereoscopic lenses. Claim 9 In claim 8, the panel bonding system comprises: a display panel including the subpixels; an optical member bonded on the display panel; and a display driving unit that receives relative placement position information of the subpixels for each of the stereoscopic lenses of the optical member from a bonding device of the optical member, and corrects image data so that a stereoscopic image is displayed in a display area of ​​the display panel according to the relative placement position of the subpixels. Claim 10 In claim 9, the optical member bonding portion is a panel bonding system that aligns the alignment mark of the display panel with the flat portion of the optical member to bond the optical member to the front surface of the display panel or the display area. Claim 11 A panel bonding system according to claim 9, wherein the alignment detection unit comprises: a position coordinate detection unit that detects the placement position coordinates of each of the sub-pixels arranged in the display area; a tilt detection unit that detects the tilt angle for the stereoscopic lenses by analyzing an image pattern displayed on the display panel; and a pixel position detection unit that detects the relative placement position coordinates of the sub-pixels for each of the stereoscopic lenses according to the width and tilt angle information of each of the stereoscopic lenses. Claim 12 A panel bonding system according to claim 11, wherein the position coordinate detection unit sets a subpixel positioned at any one of the top-left, top-right, bottom-left, bottom-right, and center of the display area as a reference pixel, and sequentially detects the position coordinates of all remaining subpixels based on the reference pixel. Claim 13 In claim 12, the panel bonding system wherein the display driving unit drives the display area of ​​the display panel so that an image of a preset image pattern is displayed in the display area when position coordinate information for all subpixels is input from the position coordinate detection unit. Claim 14 In claim 11, the position coordinate detection unit detects the distance value between each subpixel and a stereoscopic lens using the position of each of the subpixels arranged in the first and second directions, the size of each subpixel, and the relative position coordinates of the subpixels. Claim 15 In claim 14, the position coordinate detection unit calculates the relative position values ​​of each subpixel superimposed with each stereoscopic lens using the distance value between the subpixels and the stereoscopic lens and the remaining width of the stereoscopic lens, in a panel bonding system. Claim 16 In claim 9, the panel bonding system wherein the display driving unit calculates the viewing time of the subpixels according to the relative arrangement position of the subpixels for each of the stereoscopic lenses and sets the viewing time number. Claim 17 In claim 16, the display driving unit corrects the horizontal line-by-line placement position and alignment state of the image data according to the placement position coordinates of the sub-pixels and the viewing point number to generate corrected image data, and drives the display area so that a stereoscopic image according to the corrected image data is displayed, in a panel bonding system. Claim 18 In claim 9, the panel bonding system comprises: a display driving unit that calculates the number of viewing points for the subpixels according to the relative arrangement positions of the subpixels and sets a viewing point number according to the number of viewing points of the subpixels; a viewing point data generation unit that corrects the arrangement position and alignment state of the image data by horizontal line according to the arrangement position of the subpixels and the viewing point number to generate corrected image data; and a main processor that generates data voltages corresponding to the corrected image data and controls the display of the stereoscopic image in the display area. Claim 19 In claim 18, the panel bonding system wherein the point-time data generation unit calculates the relative position values ​​of the subpixels and the number of viewing points per stereoscopic lens to calculate a target point for each subpixel, and sets the target point for each subpixel or the target point value as the respective viewing point. Claim 20 In claim 18, the panel bonding system, wherein the point-time data generation unit calculates the target point-time for each subpixel by calculating the relative position values ​​of the subpixels and the number of viewing points for each stereoscopic lens, and renders the target point-time for each subpixel by adding or subtracting a point-time number according to the decimal value of the target point-time for each subpixel.

Images