Display device

Abstract

A display device includes: a lower substrate; and pixels including sub-pixels, the pixels having a transparent region defined to transmit light on the lower substrate and a plurality of light-emitting regions disposed around the transparent region and defined to emit light having at least three different colors.

Description

Technical Field

[0001] The present disclosure relates to a display device. Background Art

[0002] With the development of information technology, the market for display devices as a connection medium between users and information has expanded. Accordingly, display devices such as organic light-emitting displays (OLEDs), quantum dot displays (QDDs), and liquid crystal displays (LCDs) have been increasingly used.

[0003] OLEDs and the like include: a display panel including a plurality of sub-pixels arranged in a matrix; a driver for outputting a driving signal for driving the display panel; and a power supply for generating power to be supplied to the display panel or the driver. The driver includes: a scan driver for supplying a scan signal (or a gate signal) to the display panel; and a data driver for supplying a data signal to the display panel. When driving signals (e.g., a scan signal and a data signal) are supplied to sub-pixels formed on the display panel, the above display device displays an image by enabling selected sub-pixels to transmit light or emit light directly.

[0004] Some of the above display devices (e.g., OLEDs) have excellent response speed, viewing angle, and contrast, and can be easily thinned. Since an OLED includes a display panel configured to have separate transparent regions and light-emitting regions, it has been studied as a next-generation display device in various fields. Summary of the Invention

[0005] The present disclosure provides a display device including: a lower substrate; and pixels including sub-pixels having a transparent region defined to transmit light on the lower substrate and a plurality of light-emitting regions provided around the transparent region and defined to emit light of at least three different colors.

[0006] In another aspect, the present disclosure provides a display device including: a lower substrate; and pixels including sub-pixels having a transparent region defined to transmit light on the lower substrate and a light-emitting region defined to emit light, wherein the light-emitting region has an "L" shape.

[0007] In still another aspect, the present disclosure provides a display device including: a lower substrate; and pixels including sub-pixels having a transparent region defined to transmit light on the lower substrate and a plurality of light-emitting regions provided on four sides of the transparent region and defined to emit light of at least three different colors. Brief Description of the Drawings

[0008] The accompanying drawings are included to provide a further understanding of the present invention and are incorporated into and constitute a part of this application, illustrate embodiments of the present invention, and, together with the description, are used to explain the principles of the present invention. In the drawings:

[0009] Figure 1 is a schematic block diagram showing an organic light-emitting display (OLED), Figure 2 is showing Figure 1 a schematic diagram of the configuration of the sub-pixels shown, Figure 3 is showing Figure 1 an example of a detailed circuit configuration of the sub-pixels shown, and Figure 4 is for explaining Figure 1 a cross-sectional view of the display panel shown;

[0010] Figure 5 is a plan view of the arrangement of pixels according to a first embodiment of the present disclosure, Figure 6 is Figure 5 a plan view of the arrangement of a part of one pixel illustrated, Figure 7 is Figure 6 a diagram of the arrangement of one pixel illustrated, and Figure 8 is a cross-sectional view showing an example of a region taken along A1 - A2 of Figure 7 ; and

[0011] Figure 9 is a first plan view of the arrangement of pixels according to a second embodiment of the present disclosure, Figure 10 is a second plan view of the arrangement of pixels according to a second embodiment of the present disclosure, Figure 11 is a third plan view of the arrangement of pixels according to a second embodiment of the present disclosure, Figure 12 is a fourth plan view of the arrangement of pixels according to a second embodiment of the present disclosure, Figure 13 is showing Figure 10 a diagram of the arrangement of two sub-pixels shown, and Figure 14 is for further explaining another sub-pixel adjacent to Figure 10 the two sub-pixels shown. Detailed Description of the Embodiments

[0012] Reference will now be made in detail to embodiments of the present invention, which are illustrated in the accompanying drawings.

[0013] Hereinafter, an OLED including an organic light-emitting diode will be described for exemplary embodiments of the present disclosure, but the present disclosure can also be applied to other display devices including inorganic light-emitting displays.

[0014] Figure 1 is a schematic block diagram showing an OLED, Figure 2 is showing Figure 1Schematic diagram of the configuration of the sub-pixels shown Figure 3 shows Figure 1 an example of the detailed circuit configuration of the sub-pixels shown, and Figure 4 is a cross-sectional view for explaining Figure 1 the function of the display panel shown;

[0015] As Figure 1 shown, the OLED may include an image supply unit 110, a timing controller 120, a scan driver 130, a data driver 140, a display panel 150, and a power supply 180.

[0016] The image supply unit 110 may output various driving signals and an image data signal supplied from the outside or an image data signal stored in an internal memory. The image supply unit 110 may provide a data signal and various driving signals to the timing controller 120.

[0017] The timing controller 120 may output a gate timing control signal GDC for controlling the operation timing of the scan driver 130, a data timing control signal DDC for controlling the operation timing of the data driver 140, and various synchronization signals (vertical synchronization signal Vsync and horizontal synchronization signal Hsync). The timing controller 120 may provide the data signal DATA provided from the image supply unit 110 to the data driver 140 together with the data timing control signal DDC.

[0018] The scan driver 130 may output a scan signal (or a gate signal) in response to the gate timing control signal GDC provided from the timing controller 120 or the like. The scan driver 130 may provide the scan signal to the sub-pixels included in the display panel 150 through scan lines GL1 to GLm. The scan driver 130 may be formed in the form of an integrated circuit (IC), or may be directly formed on the display panel 150 in an in-panel gating method.

[0019] The data driver 140 may sample and latch the data signal DATA in response to the data timing control signal DDC provided from the timing controller 120 or the like, may convert the data signal DATA into a data voltage in the form of an analog signal corresponding to a gamma reference voltage, and may output the data voltage. The data driver 140 may provide the data voltage to the sub-pixels included in the display panel 150 through data lines DL1 to DLn. The data driver 140 may be formed in the form of an integrated circuit (IC) and may be mounted on the display panel 150 or may be mounted on a printed circuit board, but the present disclosure is not limited thereto.

[0020] The power supply 180 may generate and output a first driving voltage EVDD having a high potential and a second driving voltage EVSS having a low potential based on an external input voltage provided from the outside. The power supply 180 may generate and output a voltage required to drive the scan driver 130 (e.g., a scan high voltage or a scan low voltage) or a voltage required to drive the data driver 140 (a drain voltage or a semi-drain voltage), as well as the first driving voltage EVDD and the second driving voltage EVSS.

[0021] The display panel 150 may display an image in response to driving signals including scan signals and data voltages output from drivers including the scan driver 130 and the data driver 140, and the first driving voltage EVDD and the second driving voltage EVSS output from the power supply 180. Sub-pixels of the display panel 150 may emit light directly.

[0022] As Figure 2 shown, one sub-pixel SP may be defined by a first data line DL1, a first scan line GL1, a first driving voltage line EVDD, and a second driving voltage line EVSS. In addition, one sub-pixel SP may include a switching transistor SW and a pixel circuit PC including a driving transistor, a storage capacitor, an organic light-emitting diode, etc.

[0023] Compared with a liquid crystal display, the sub-pixel SP used in an OLED may emit light directly and may have a complex circuit configuration. In addition, a compensation circuit for compensating for deterioration of a driving transistor for supplying a driving current to the organic light-emitting diode and the organic light-emitting diode for emitting light may be complex and diverse. Therefore, it can be noted that the pixel circuit PC included in the sub-pixel SP is illustrated in the form of a block. However, according to the present disclosure, the sub-pixel SP may be implemented based on at least Figure 3 the configuration shown.

[0024] As Figure 3 shown, one sub-pixel SP may include a switching transistor SW, a driving transistor DT, a sensing transistor SE, a storage capacitor CST, and an organic light-emitting diode OLED.

[0025] The switching transistor SW may have a gate electrode connected to the first scan line GLl, a first electrode connected to the first data line DLl, and a second electrode connected to the gate electrode of the driving transistor DT and one end of the storage capacitor CST. The switching transistor SW may apply a data voltage transmitted through the first data line DL1 to one end of the storage capacitor CST.

[0026] The driving transistor DT may have a gate electrode connected to the second electrode of the switching transistor SW and one end of the storage capacitor CST, a first electrode connected to the first driving voltage line EVDD, and a second electrode connected to the other end of the storage capacitor CST and the anode of the organic light-emitting diode OLED. The driving transistor DT may generate a driving current based on the data voltage stored in the storage capacitor CST.

[0027] The sensing transistor SE may have a gate electrode connected to the first scan line GL1, a first electrode connected to the second electrode of the driving transistor DT and the anode of the organic light-emitting diode OLED, and a second electrode connected to the reference line REF. The sensing transistor SE may sense the characteristics (threshold voltage or current mobility) of the driving transistor DT or the characteristics (threshold voltage) of the organic light-emitting diode OLED, and then may transfer the sensed characteristics to an external circuit.

[0028] The storage capacitor CST may have one end connected to the second electrode of the switching transistor SW and the gate electrode of the driving transistor DT, and the other end connected to the second electrode of the driving transistor DT, the first electrode of the sensing transistor SE, and the anode of the organic light-emitting diode OLED. The storage capacitor CST may store the data voltage and may transfer the data voltage to the gate electrode of the driving transistor DT.

[0029] The organic light-emitting diode OLED may have an anode connected to the second electrode of the driving transistor DT, the first electrode of the sensing transistor SE, and the other end of the storage capacitor CST, and a cathode connected to the second driving voltage line EVSS. The organic light-emitting diode OLED may emit light in response to the driving current generated by the driving transistor DT. Hereinafter, an example of implementing a display panel will be described for the present disclosure based on Figure 3 the sub-pixels shown.

[0030] As Figure 4 shown, the display panel 150 according to the first embodiment of the present disclosure may include a display unit 160 located between a lower substrate 150a and an upper substrate 150b. The display unit 160 may be implemented based on the sub-pixels described with reference to Figure 3 the description.

[0031] The lower substrate 150a and the upper substrate 150b may be selected as the same material or different materials. For example, the lower substrate 150a may be selected as a single material such as a flexible resin or a rigid glass, and the upper substrate 150b may be selected as a composite material such as an organic / inorganic material, but the present disclosure is not limited thereto.

[0032] The display unit 160 may have a light-emitting area EMA that emits light directly and a transparent area TRA that does not emit light and transmits external light therethrough. To implement the display panel 150 as described above, an example in which a sub-pixel includes a light-emitting area EMA and a transparent area TRA is described, but the present disclosure is not limited thereto.

[0033] As described above, the OLED has excellent response speed, viewing angle, and contrast, and can be easily thinned. The OLED includes a display panel configured to have a separate transparent area and a light-emitting area, and thus, the OLED has been studied as a next-generation display device in various fields. To enhance the transparency and haze of the OLED having a light-emitting area and a transparent area, the present disclosure provides the following configuration.

[0034] Figure 5 is a plan view of the arrangement of pixels according to the first embodiment of the present disclosure, Figure 6 is Figure 5 a plan view of the arrangement of a part of an exemplified pixel, Figure 7 is Figure 6 a view of the arrangement of an exemplified pixel, and Figure 8 is a cross-sectional view showing an example of a region taken along Figure 7 A1 - A2.

[0035] As Figure 5 shown, the pixel according to the first embodiment may include sub-pixels, each sub-pixel including a light-emitting area (e.g., R, W, B, or G) and a transparent area TRA. An example in which one pixel is defined by sub-pixels (R, W, B, G) that emit red light, white light, blue light, and green light is described, but the present disclosure is not limited thereto. The portion between the transparent area TRA and the light-emitting area (e.g., R, W, B, or G) may be defined by a black matrix BM, but the present disclosure is not limited thereto.

[0036] The light-emitting area (e.g., R, W, B, or G) may have an “L” shape, and the transparent area TRA may have a rectangle different from the light-emitting area (e.g., R, W, B, or G). In the light-emitting area (e.g., R, W, B, or G), the vertical direction portion may have a long rectangular shape, and the horizontal direction portion may have a polygon shape shorter than the vertical direction portion.

[0037] In a light-emitting region (e.g., R, W, B, or G), two light-emitting regions (e.g., R or B) that emit light of the same color can have upper and lower portions disposed adjacent to each other. In this case, the lower light-emitting region of two light-emitting regions (e.g., R) that emit light of the same color can be formed by rotating the upper light-emitting region by 180°. As a result, two light-emitting regions (e.g., R) disposed adjacent to each other in the vertical or horizontal direction can form a cross shape. Portions adjacent to the two light-emitting regions (e.g., R or B) can form a diagonal shape.

[0038] In a light-emitting region (e.g., R, W, B, or G), opposite edges of a vertical direction end portion not connected to a horizontal direction portion can be removed instead of being formed as a straight line, but the present disclosure is not limited thereto.

[0039] As Figure 6 shown, one pixel PIXEL can include a red sub-pixel having a red light-emitting region EMA_R and a transparent region TRA, a white sub-pixel having a white light-emitting region EMA_W and a transparent region TRA, a blue sub-pixel having a blue light-emitting region EMA_B and a transparent region TRA, and a green sub-pixel having a green light-emitting region EMA_G and a transparent region TRA. Additionally, when viewed from above, the red, white, blue, and green sub-pixels are arranged in that order, but the present disclosure is not limited thereto.

[0040] As Figure 7 shown, the red light-emitting region EMA_R of the red sub-pixel can be defined by a red data line DL_R disposed on the left side, a first reference line REF1 disposed on the right side, and a first scan line GL1 disposed on the lower side. The transparent region TRA of the red sub-pixel can be defined by the first reference line REF1, a white data line DL_W disposed adjacent to the right side thereof, and the first scan line GL1 disposed on the lower side. A second driving voltage line EVSS can also be disposed on the left side of the red data line DL_R of the red sub-pixel. The second driving voltage line EVSS can correspond to a virtual voltage line, which is also arranged to prevent a voltage drop of the second driving voltage. Thus, the second driving voltage line EVSS can be omitted according to the configuration of the display panel.

[0041] The white light-emitting region EMA_W of the white sub-pixel can be defined by a white data line DL_W disposed on the left side, a second reference line REF2 disposed on the right side, and a first scan line GL1 disposed on the lower side. The transparent region TRA of the white sub-pixel can be defined by the second reference line REF2, a blue data line DL_B disposed adjacent to the right side thereof, and the first scan line GL1 disposed on the lower side.

[0042] The blue light-emitting region EMA_B of the blue sub-pixel can be defined by the blue data line DL_B disposed on the left side, the third reference line REF3 disposed on the right side, and the first scan line GL1 disposed on the lower side. The transparent region TRA of the blue sub-pixel can be defined by the third reference line REF3, the green data line DL_G disposed adjacent to its right side, and the first scan line GL1 disposed on the lower side.

[0043] The green light-emitting region EMA_G of the green sub-pixel can be defined by the green data line DL_G disposed on the left side, the fourth reference line REF4 disposed on the right side, and the first scan line GL1 disposed on the lower side. The first driving voltage line EVDD can also be disposed on the right side of the fourth reference line REF4. The first driving voltage line EVDD can correspond to a virtual voltage line, and the virtual voltage line is also set to prevent the voltage drop of the first driving voltage. Therefore, the first driving voltage line EVDD can be omitted according to the configuration of the display panel. Therefore, the transparent region TRA of the green sub-pixel can be defined by the first driving voltage line EVDD disposed on the left side and the first scan line GL1 disposed on the lower side. The transparent region TRA can also be defined by the fourth reference line REF4 and the first scan line GL1 disposed on the lower side.

[0044] As described above with reference to Figure 3 As described above, the red sub-pixel, the white sub-pixel, the blue sub-pixel, and the green sub-pixel can each include a switching transistor SW, a sensing transistor SE, a driving transistor DT, a storage capacitor CST, and an organic light-emitting diode (not shown). In addition, based on the first scan line GL1, the arrangement relationship of the switching transistor SW, the sensing transistor SE, the driving transistor DT, the storage capacitor CST, and the organic light-emitting diode (not shown) can be the same in the red sub-pixel, the white sub-pixel, the blue sub-pixel, and the green sub-pixel, which will be described below.

[0045] The switching transistor SW and the sensing transistor SE are connected to the first scan line GL1, and thus can be disposed on the lower side adjacent to the first scan line GL1 (the lower side of the storage capacitor). The driving transistor DT can be disposed on the upper side (the upper side of the storage capacitor) away from the switching transistor SW and the sensing transistor SE.

[0046] The storage capacitor CST can be connected to the switching transistor SW, the sensing transistor SE, the driving transistor DT, and the organic light-emitting diode (not shown) and requires a wide space to form a capacitor. Therefore, the storage capacitor CST can be disposed between the switching transistor SW (or the sensing transistor) and the driving transistor DT. However, although each of the sub-pixels according to the embodiments of the present disclosure includes a switching transistor SW, a sensing transistor SE, a driving transistor DT, a storage capacitor CST, and an organic light-emitting diode (not shown), the present disclosure is not limited thereto.

[0047] An organic light emitting diode (not shown) may be stacked on the arrangement positions of a switching transistor SW, a sensing transistor SE, a driving transistor DT, and a storage capacitor CST disposed therebelow, and thus is omitted in Figure 7 However, based on the following description of Figure 8 , a configuration related to the organic light emitting diode (not shown) will be understood.

[0048] As Figure 8 shown, a light emitting region EMA_R and a transparent region TRA of a red sub-pixel may have different interlayer structures. A white sub-pixel, a blue sub-pixel, and a green sub-pixel may have the interlayer structures Figure 8 shown, and thus hereinafter, the configurations of the light emitting region EMA_R and the transparent region TRA will be described based on the red sub-pixel.

[0049] The driving transistor DT above the lower substrate 150a may be located in the light emitting region EMA_R of the red sub-pixel. A lower electrode LE connected to the source electrode or the drain electrode of the driving transistor DT may be located above the driving transistor DT. The lower electrode LE may be an anode of the organic light emitting diode. The lower electrode LE may include a reflective layer.

[0050] A bank layer BNK having an opening region and defining the light emitting region may be located on the lower electrode LE, and the lower electrode LE is partially exposed through the opening region. A light emitting layer EL may be located on the bank layer BNK. An upper electrode UE may be located on the light emitting layer EL. The upper electrode UE may be a cathode of the organic light emitting diode. The upper electrode UE may be selected as a transparent oxide material or the like for transmitting the light of the light emitting layer EL therethrough.

[0051] An example is shown in which only the lower substrate 150a is present in the transparent region TRA of the red sub-pixel and there is no other structural layer. However, an insulating layer or the like that is formed on the entire portion of the lower substrate 150a and is not related to light transmission may also be located in the transparent region TRA of the red sub-pixel.

[0052] The above first embodiment of the present invention may have an effect of minimizing the width of the bank layer that occupies the largest area to implement a pixel by providing a pixel structure in which a light emitting region and a transparent region are alternately arranged adjacent to each other. In addition, the first embodiment of the present disclosure may have an effect of enhancing transparency by forming sub-pixels in an "L" shape and enhancing a haze characteristic by dividing the transparent region for each sub-pixel.

[0053] Figure 9 is a first plan view of an arrangement of pixels according to a second embodiment of the present disclosure, Figure 10 is a second plan view of an arrangement of pixels according to a second embodiment of the present disclosure,Figure 11 is a third plan view of the arrangement of pixels according to the second embodiment of the present disclosure, Figure 12 is a fourth plan view of the arrangement of pixels according to the second embodiment of the present disclosure, Figure 13 shows Figure 10 the arrangement of the two sub-pixels shown, and Figure 14 is a diagram for further explaining Figure 10 another sub-pixel adjacent to the two sub-pixels shown.

[0054] As Figure 9 shown, the pixels according to the first example of the second embodiment may include sub-pixels, each sub-pixel including a light-emitting region (e.g., R, W, B, or G) and a transparent region TRA. A pixel may be defined by sub-pixels (R, W, B, and G) that emit red light, white light, blue light, and green light, but the present disclosure is not limited thereto. The portion between the transparent region TRA and the light-emitting region (e.g., R, W, B, or G) may be defined by a black matrix BM, but the present disclosure is not limited thereto.

[0055] The light-emitting region (e.g., R, W, B, or G) may have a square shape, and the transparent region TRA may have a square shape having four sides surrounded (or shared) by a plurality of light-emitting regions (e.g., R, W, B, or G). That is, the plurality of pixels surrounding one transparent region TRA may have a shape surrounding one transparent region TRA. Two light-emitting regions that emit light of the same color (e.g., R) may be defined as one sub-pixel, but only the region is defined.

[0056] In the light-emitting region (e.g., R, W, B, or G), two light-emitting regions (e.g., R or W) that emit light of the same color may be arranged adjacent to each other left and right in the horizontal direction, and two light-emitting regions (e.g., B or G) that emit light of the same color may be arranged adjacent to each other up and down in the vertical direction. As a result, the light-emitting regions included in one pixel PIXEL may have a shape formed by rotating an "L" shape 180 degrees counterclockwise (an inverted "L" shape), and the light-emitting regions that define another pixel may be configured in an "L" shape in the opposite region. That is, at least two pixels may share one transparent region TRA while surrounding the four sides of one transparent region TRA.

[0057] As Figure 10As shown, pixels according to the second example of the second embodiment may be formed in the same or similar form as the first example, such that a plurality of pixels surrounding a transparent region TRA share one transparent region TRA. To this end, one pixel PIXEL may include a red sub-pixel having a red emission region EMA_R and a transparent region TRA, a white sub-pixel having a white emission region EMA_W and a transparent region TRA, a blue sub-pixel having a blue emission region EMA_B and a transparent region TRA, and a green sub-pixel having a green emission region EMA_G and a transparent region TRA.

[0058] The red emission region EMA_R and the white emission region EMA_W may be arranged in the horizontal direction and may be arranged adjacent to each other vertically, and the blue emission region EMA_B and the green emission region EMA_G may be arranged in the vertical direction and may be arranged adjacent to each other horizontally. As a result, when the transparent region TRA is excluded, one pixel PIXEL may have a shape formed by rotating an "L" shape 180 degrees in the counterclockwise direction.

[0059] Viewed from a part of a pixel having a shape formed by rotating an "L" shape 180 degrees in the counterclockwise direction, the red sub-pixel and the white sub-pixel are arranged in the horizontal direction, and the blue sub-pixel and the green sub-pixel are arranged in the vertical direction, but the present disclosure is not limited thereto.

[0060] For example, one pixel PIXEL is formed in such a way that a circuit region DRA including a circuit for driving an organic light emitting diode is located at a corner (or an edge portion) of the transparent region TRA. However, the sub-pixels according to the present disclosure may be selected as a top emission type, in which light is emitted in a direction opposite to the lower substrate. Therefore, the circuit region DRA may be included in the emission region of each sub-pixel instead of being separately defined. Therefore, a separate circuit region DRA may not be defined.

[0061] As Figure 11 As shown, pixels according to the third example of the second embodiment may be formed in the same or similar form as the first example, such that a plurality of pixels surrounding a transparent region TRA share one transparent region TRA. In this case, when the transparent region TRA is excluded, one pixel PIXEL may have a cross shape including a red emission region EMA_R, a white emission region EMA_W, a blue emission region EMA_B, and a green emission region EMA_G.

[0062] Thus, the light-emitting regions included in a pixel PIXEL have a cross shape because two light-emitting regions that emit light of the same color are adjacently provided on each side surrounding the transparent region TRA. Here, one light-emitting region may have a width corresponding to 1 / 2 of the horizontal or vertical side of the transparent region TRA.

[0063] Figure 11 An example is illustrated in which the white light-emitting region EMA_W and the red light-emitting region EMA_R provided in the horizontal direction are adjacently provided to each other and the blue light-emitting region EMA_B and the green light-emitting region EMA_G provided in the vertical direction are spaced apart from each other, but this is merely exemplary and the present disclosure is not limited thereto.

[0064] As Figure 12 shown, a pixel according to the fourth example of the second embodiment may be formed in the same or similar form as the second example such that a plurality of pixels surrounding one transparent region TRA share one transparent region TRA. In this case, when the transparent region TRA is excluded, one pixel PIXEL may have a cross shape including a red light-emitting region EMA_R, a white light-emitting region EMA_W, a blue light-emitting region EMA_B, and a green light-emitting region EMA_G.

[0065] Thus, the light-emitting regions included in a pixel PIXEL have a cross shape because two light-emitting regions that emit light of the same color are adjacently provided on each side surrounding the transparent region TRA. Here, one light-emitting region may have a width corresponding to the horizontal or vertical side of the transparent region TRA.

[0066] Figure 12 An example is illustrated in which the white light-emitting region EMA_W and the red light-emitting region EMA_R provided in the horizontal direction are adjacently provided to each other and the blue light-emitting region EMA_B and the green light-emitting region EMA_G provided in the vertical direction are spaced apart from each other. But this is merely exemplary and the present disclosure is not limited thereto.

[0067] As Figure 13 shown, the blue light-emitting region EMA_B of the blue sub-pixel may be defined by the blue data line DL_B provided on the left side, the first reference line REF1 provided on the right side, and the first scan line GL1 provided on the lower side. The green light-emitting region EMA_G of the green sub-pixel may be defined by the first driving voltage line EVDD provided on the left side, the green data line DL_G provided on the right side, and the first scan line GL1 provided on the lower side.

[0068] The second driving voltage line EVSS, the red data line DL_R, and the white data line DL_W may be located to the left of the blue data line DL_B. The transparent region TRA of the blue sub-pixel may be located to the left of the red data line DL_R, and the transparent region TRA of the green sub-pixel may be located to the right of the green data line DL_G, but the present disclosure is not limited thereto.

[0069] The adjacent blue sub-pixel and green sub-pixel may be symmetric with respect to each other left and right based on the first reference line REF1 and the first driving voltage line EVDD to share the first reference line REF1 and the first driving voltage line EVDD. That is, the sensing transistors SE and the driving transistors DT included in the two sub-pixels, respectively, may be arranged symmetrically with respect to each other to share the first reference line REF1 and the first driving voltage line EVDD provided therebetween.

[0070] Each of the blue sub-pixel and the green sub-pixel may include a switching transistor SW, a sensing transistor SE, a driving transistor DT, a storage capacitor CST, and an organic light emitting diode (not shown). In addition, as described above with reference to Figure 7 the above, based on the first scan line GL1, the arrangement relationship of the switching transistor SW, the sensing transistor SE, the driving transistor DT, the storage capacitor CST, and the organic light emitting diode (not shown) may be the same in the blue sub-pixel and the green sub-pixel, which will be described below.

[0071] The switching transistor SW and the sensing transistor SE are connected to the first scan line GL1, and thus may be disposed on the lower side adjacent to the first scan line GL1 (the lower side of the storage capacitor). The driving transistor DT may be disposed on the upper side away from the switching transistor SW and the sensing transistor SE (the upper side of the storage capacitor).

[0072] The storage capacitor CST may be connected to the switching transistor SW, the sensing transistor SE, the driving transistor DT, and the organic light emitting diode (not shown) and requires a wide space to form a capacitance. Therefore, the storage capacitor CST may be disposed between the switching transistor SW (or the sensing transistor) and the driving transistor DT. However, although each of the sub-pixels according to the embodiments of the present disclosure includes the switching transistor SW, the sensing transistor SE, the driving transistor DT, the storage capacitor CST, and the organic light emitting diode (not shown), the present disclosure is not limited thereto.

[0073] As Figure 14 shown, when the transparent region TRA is excluded, one pixel may have a cross shape. When one pixel has a cross shape, all the circuits DT, SW, SE, and CST included in one pixel may be symmetric with respect to each other vertically or horizontally.

[0074] In addition to the above description, the blue sub-pixels and the green sub-pixels arranged in the vertical direction may be symmetric with respect to each other on the left and right sides based on the first reference line REF1 and the first driving voltage line EVDD. The white sub-pixels and the red sub-pixels arranged in the horizontal direction may be symmetric with respect to each other above and below based on the first scanning line GL1. However, this is merely exemplary, and at least one of the circuits DT, SW, SE, and CST included in one pixel may be asymmetric with respect to each other on the upper and lower sides or on the right and left sides.

[0075] The above-described second embodiment of the present disclosure may have an effect of minimizing the width of the bank layer that occupies the largest area to implement a pixel having a light-emitting region and a transparent region. In addition, the second embodiment of the present disclosure has an effect of enhancing transparency and haze characteristics by providing a pixel structure in which a circuit is formed at an intersection between a horizontal region and a vertical region and a plurality of adjacent light-emitting regions (sub-pixels) share one transparent region.

[0076] According to the above-described first and second embodiments of the present disclosure, as seen from Table 1 below, while maintaining the aperture ratio defined by the light-emitting region at the same or similar level of 30% as in the conventional case, the transparency defined by the transparent region is enhanced. In Table 1 below, a conventional structure is formed in such a way that all the light-emitting regions of the red sub-pixels, the green sub-pixels, the blue sub-pixels, and the white sub-pixels are adjacent to each other and closed to each other, and the region adjacent thereto is used as a transparent region.

[0077] [Table 1]

[0078]

[0079] The present disclosure may have an effect of enhancing transparency and haze characteristics by implementing sub-pixels to minimize the width of the bank layer that occupies the largest area to implement a pixel having a light-emitting region and a transparent region and configuring a relatively wide transparent region compared to the light-emitting region.

[0080] Cross-reference to Related Applications

[0081] This application claims the benefit of Korean Patent Application No. 10-2019-0160139, filed on Dec. 4, 2019, which is incorporated herein by reference in its entirety as if fully set forth herein.

Claims

1. A display device, the display device comprising: A lower substrate; And A pixel including sub-pixels, the pixel having at least one transparent region defined to transmit light on the lower substrate and a plurality of light-emitting regions disposed around the at least one transparent region and defined to emit light of at least three different colors, Wherein, a portion adjacent to two light-emitting regions has a diagonal shape, and the two light-emitting regions are spaced apart from each other and the portion is interposed between the two light-emitting regions, Wherein, the two light-emitting regions emit light of the same color, Wherein, the at least one transparent region and the plurality of light-emitting regions are alternately arranged adjacent to each other, Wherein, the plurality of light-emitting regions include a red light-emitting region, a white light-emitting region, a blue light-emitting region, and a green light-emitting region, Wherein, each of the at least one transparent region is surrounded by two of the red light-emitting region, the white light-emitting region, the blue light-emitting region, and the green light-emitting region, Wherein, two transparent regions are spaced apart from each other and another transparent region is interposed between the two transparent regions, and the two transparent regions are respectively surrounded by two different light-emitting regions among the red light-emitting region, the white light-emitting region, the blue light-emitting region, and the green light-emitting region, Wherein, the red light-emitting region, the white light-emitting region, the blue light-emitting region, and the green light-emitting region are sequentially and repeatedly arranged in one direction, and a transparent region is interposed between each two adjacent light-emitting regions of the red light-emitting region, the white light-emitting region, the blue light-emitting region, and the green light-emitting region, and Wherein, each of the plurality of light-emitting regions has an "L" shape.

2. The display device according to claim 1, wherein, The pixel includes a red sub-pixel having the red light-emitting region, a white sub-pixel having the white light-emitting region, a blue sub-pixel having the blue light-emitting region, and a green sub-pixel having the green light-emitting region.

3. The display device according to claim 1, wherein, The at least one transparent region has a square shape, and the square shape has four sides surrounded by light-emitting regions included in at least two pixels.

4. The display device according to claim 1, wherein, One of the plurality of light-emitting regions has a width corresponding to 1 / 2 of a horizontal side or a vertical side of the at least one transparent region.

5. The display device according to claim 1, wherein, One of the plurality of light-emitting regions has a width corresponding to a horizontal side or a vertical side of the at least one transparent region.

6. The display device according to claim 5, wherein, The one light-emitting region is divided in a horizontal direction or a vertical direction.

7. The display device according to claim 1, wherein, The two light-emitting regions form a cross shape.

8. The display device according to claim 1, wherein, Each sub-pixel on the lower substrate includes a circuit region, the circuit region including a circuit for driving an organic light-emitting diode, and the circuit region is disposed at a corner of the at least one transparent region.

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