TWI900031B - Display apparatus - Google Patents

Abstract

A display apparatus includes a first substrate, pixel structures, a second substrate and a liquid crystal layer. The first substrate has a see-through area and a display area outside the see-through area. Each of the pixel structures includes an element, a pixel electrode and a common electrode. The element and the pixel electrode are disposed on the first substrate, and the pixel electrode is electrically connected to the element. The second substrate is disposed opposite to the first substrate. The liquid crystal layer is disposed between the first substrate and the second substrate. The pixel structures include first pixel structures arranged in an array in the see-through area and second pixel structures arranged in an array in the display area. A potential difference between the pixel electrode and the common electrode of each of the first pixel structures is always a certain value greater than zero volts or is always zero volts.

Description

Display device

The present invention relates to an optoelectronic device, and more particularly to a display device.

At least a portion of a 3D display device can be transparent, allowing the user to view objects behind it. This is commonly seen in car dashboards, game consoles, and the like. Generally speaking, a 3D display device has a display area and a see-through area surrounding the display area. The display area provides a 3D display image for the user to view, while the see-through area is transparent, allowing the user to view physical objects behind it.

Generally speaking, the see-through area of a 3D display device has a low transmittance, which affects the user's sense of three-dimensionality and realism. To increase the transmittance of the see-through area, part of the polarizer in the see-through area of the LCD panel can be removed. However, the internal opening edge formed by removing part of the polarizer cannot be polished flat, affecting the appearance of the 3D display device. If additional frame glue is applied to the junction of the see-through area and the display area to prevent the liquid crystal from distributing in the see-through area and improve the transmittance of the see-through area, an additional light-shielding pattern is required to block it, resulting in a frame around the see-through area. In addition, Newton rings are easily formed near the frame glue application area, which is not conducive to the visual effect of the 3D display device.

The present invention provides a display device with good visual effects.

The display device of the present invention includes a first substrate, a plurality of pixel structures, a second substrate, and a liquid crystal layer. The first substrate has a see-through area and a display area outside the see-through area. Each pixel structure includes a component, a pixel electrode, and a common electrode. The component and the pixel electrode are arranged on the first substrate, and the pixel electrode is electrically connected to the component. The second substrate is arranged opposite to the first substrate. The liquid crystal layer is arranged between the first substrate and the second substrate. The plurality of pixel structures include a plurality of first pixel structures arranged in an array in the see-through area and a plurality of second pixel structures arranged in an array in the display area. The potential difference between the pixel electrode and the common electrode of each first pixel structure is always a certain value greater than zero volt or always zero volt.

Reference will now be made in detail to exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Whenever possible, the same reference numerals are used in the drawings and the description to refer to the same or like parts.

It should be understood that when an element, such as a layer, film, region, or substrate, is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element, or intervening elements may be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, no intervening elements are present. As used herein, "connected" can refer to being physically and/or electrically connected. Furthermore, "electrically connected" or "coupled" can mean that there are other elements between two elements.

As used herein, "about," "approximately," or "substantially" includes the stated value and the average value within an acceptable range of deviation for the particular value as determined by one of ordinary skill in the art, taking into account the measurement in question and the particular amount of error associated with the measurement (i.e., the limitations of the measurement system). For example, "about" can mean within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, or ±5%. Furthermore, as used herein, "about," "approximately," or "substantially" can be used to select an acceptable range of deviation or standard deviation depending on the optical, etching, or other properties, rather than applying a single standard deviation to all properties.

Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that those terms as defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and this invention, and will not be interpreted as idealized or overly formal meanings unless expressly defined as such herein.

Figure 1 is an exploded schematic diagram of a display device according to an embodiment of the present invention. Figure 2 is a top view and enlarged schematic diagram of a portion of a panel according to an embodiment of the present invention. Figure 2 corresponds to portion R of panel 100 in Figure 1 . Figure 2 illustrates first substrate 110, data lines DL, gate lines GL, element 142 of pixel structure 140, and pixel electrode 144, while omitting other components of panel 100. Figure 3 is a cross-sectional schematic diagram of the panel and backlight according to an embodiment of the present invention. Figure 3 corresponds to line segment I-I' in Figure 2 .

Referring to Figures 1, 2, and 3, the display device DP includes a liquid crystal display panel 10. In some embodiments, the liquid crystal display panel 10 includes a panel 100, an upper polarizer 200, and a lower polarizer 300, wherein the upper polarizer 200 and the lower polarizer 300 are disposed on the upper and lower sides of the panel 100, respectively. However, the present invention is not limited to this. In other embodiments, at least one of the upper polarizer 200 and the lower polarizer 300 may be integrated into a cell of the panel 100.

The panel 100 includes a first substrate 110, a second substrate 120 disposed opposite the first substrate 110, and a liquid crystal layer 130 disposed between the first and second substrates 110, 120. The first substrate 110 has a see-through region 112 and a display region 114 outside the see-through region 112. In some embodiments, the display region 114 may surround the see-through region 112, but the present invention is not limited thereto. For example, in some embodiments, the first and second substrates 110, 120 may be made of glass, quartz, organic polymers, or other suitable materials.

The panel 100 further includes a plurality of pixel structures 140. Each pixel structure 140 includes a device 142, a pixel electrode 144, and a common electrode 146. The device 142 and the pixel electrode 144 are disposed on the first substrate 110, and the pixel electrode 144 is electrically connected to the device 142. In some embodiments, the common electrode 146 of each pixel structure 140 may be selectively disposed on the second substrate 120, and located between the second substrate 120 and the liquid crystal layer 130. In other words, in some embodiments, the common electrode 146 and the pixel electrode 144 of the pixel structure 140 may be selectively located on the upper and lower sides of the liquid crystal layer 130. However, the present invention is not limited thereto. In other embodiments, the common electrode 146 and the pixel electrode 144 of the pixel structure 140 may also be located on the same side of the liquid crystal layer 130. This will be explained in the following paragraphs with reference to other figures.

In some embodiments, the pixel electrode 144 and the common electrode 146 may be a transparent conductive layer comprising a metal oxide, such as indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, indium germanium zinc oxide, other suitable oxides, or a stacked layer of at least two of the above, but the present invention is not limited thereto.

In some embodiments, the liquid crystal layer 130 may optionally include a plurality of twisted nematic liquid crystal molecules. The liquid crystal display panel 10 includes the plurality of twisted nematic liquid crystal molecules, a common electrode 146 and a pixel electrode 144 disposed on the upper and lower sides of the plurality of twisted nematic liquid crystal molecules, an upper polarizer 200, and a lower polarizer 300. The liquid crystal display panel 10 may optionally be in a normally white mode. That is, in some embodiments, when the potential difference between the pixel electrode 144 and the common electrode 146 of the pixel structure 140 is substantially zero volts, the region where the pixel structure 140 is located may have maximum transmittance. However, the present invention is not limited thereto. In other embodiments, the liquid crystal display panel is also in the normally black mode, which will be explained below with examples in conjunction with other figures in the following paragraphs.

The plurality of pixel structures 140 include a plurality of first pixel structures 140-1 arrayed in the see-through region 112 and a plurality of second pixel structures 140-2 arrayed in the display region 114. The potential difference between the pixel electrode 144 and the common electrode 146 of each first pixel structure 140-1 is constant at a constant value greater than zero volts or constant at zero volts. In other words, in some embodiments, the transmittance of the see-through region 112 where the first pixel structures 140-1 are located can be constant at the maximum transmittance that the region where the pixel structures 140 are located can have. For example, in some embodiments, the liquid crystal display panel 10 may be in a normally white mode, and the potential difference between the pixel electrode 144 and the common electrode 146 of each first pixel structure 140 - 1 may be constantly zero volts, but the present invention is not limited thereto.

In some embodiments, the display device DP further includes a backlight 20 disposed beneath the LCD panel 10. The backlight 20 has an opening 22. An edge 22a of the opening 22 of the backlight 20 corresponds to a boundary i1 between the plurality of first pixel structures 140-1 and the plurality of second pixel structures 140-2. In some embodiments, the LCD panel 10 and the backlight 20 are stacked in a direction z, and the opening 22 of the backlight 20 and the plurality of second pixel structures 140-2 of the LCD panel 10 overlap in the direction z.

Figure 4 is a top-down schematic diagram of a first pixel structure of a liquid crystal display panel according to an embodiment of the present invention. Figure 5 is a top-down schematic diagram of a second pixel structure of a liquid crystal display panel according to an embodiment of the present invention. Referring to Figures 2, 4, and 5, the liquid crystal display panel 10 of this embodiment is in normally white mode. In some embodiments, each pixel structure 140 may further include a data line DL and a gate line GL, wherein the data line DL and the gate line GL intersect each other, and the gate line GL is electrically connected to the element 142. 2 and 5 , in some embodiments, the element 142 of the second pixel structure 140 - 2 may include a thin film transistor having a gate 142 c, a semiconductor pattern 142 d, a source 142 a, and a drain 142 b. The source 142 a and the drain 142 b are electrically connected to two regions of the semiconductor pattern 142 d, respectively. The source 142 a is electrically connected to the data line DL, the gate 142 c is electrically connected to the gate line GL, and the drain 142 b is electrically connected to the pixel electrode 144.

2 and 4 , in some embodiments, the element 142 of the first pixel structure 140 - 1 includes a first electrode 142 c - 1, a second electrode 142 a - 1, and a third electrode 142 b - 1. The first electrode 142 c - 1 is electrically connected to the gate line GL, the second electrode 142 a - 1 is electrically connected to the data line DL, and the third electrode 142 b - 1 is electrically connected to the pixel electrode 144 . In some embodiments, the shapes of the first electrode 142c-1, the second electrode 142a-1, and the third electrode 142b-1 of the element 142 of the first pixel structure 140-1 may be substantially the same as the gate 142c, the source 142a, and the drain 142b of the element 142 of the second pixel structure 140-2, respectively. Furthermore, an overlapping region O of the first electrode 142c-1, the second electrode 142a-1, and the third electrode 142b-1 of the element 142 of the first pixel structure 140-1 is not provided with any semiconductor pattern. 2 , 3 , and 4 , the pixel electrode 144 of the first pixel structure 140 - 1 is thus unaffected by the operation of the data line DL and the gate line GL. The potential difference between the pixel electrode 144 of the first pixel structure 140 - 1 and the common electrode 146 can be kept constant at zero volts, thereby maintaining the maximum transmittance of the transparent region 112 where the first pixel structure 140 - 1 is located.

2 and 3 , in some embodiments, the panel 100 further includes a light shielding pattern layer 150 and a plurality of color filter patterns 160. The light shielding pattern layer 150 is disposed on the second substrate 120 and has a plurality of first openings 152 and a plurality of second openings 154. The plurality of first openings 152 of the light shielding pattern layer 150 overlap the plurality of pixel electrodes 144 of the plurality of first pixel structures 140-1, respectively. The plurality of second openings of the light shielding pattern layer 150 overlap the plurality of pixel electrodes 144 of the plurality of first pixel structures 140-1. 154 respectively overlap the plurality of pixel electrodes 144 of the plurality of second pixel structures 140-2, the plurality of color filter patterns 160 are respectively disposed in the plurality of second openings 154 of the light-shielding pattern layer 150, the plurality of common electrodes 146 of the plurality of second pixel structures 140-2 cover the plurality of color filter patterns 160, and the plurality of common electrodes 146 of the plurality of first pixel structures 140-1 are disposed in the plurality of first openings 152 of the light-shielding pattern layer 150. In short, the plurality of first openings 152 of the light shielding pattern layer 150 overlapping the pixel electrode 144 of the first pixel structure 140 - 1 may not be provided with the color filter pattern 160 , which can further improve the transmittance of the transparent area 112 where the first pixel structure 140 - 1 is located.

Referring to Figures 2 and 3 , in some embodiments, the edge 22a of the opening 22 of the backlight 20 corresponds to the boundary i2 between the plurality of first openings 152 and the plurality of second openings 154 of the light-shielding pattern layer 150. Referring to Figures 1 , 2 , and 3 , in some embodiments, the LCD panel 10 and the backlight 20 are stacked in direction z, and the opening 22 of the backlight 20 and the plurality of first openings 152 of the light-shielding pattern layer 150 overlap in direction z.

It's worth noting that the potential difference between the pixel electrode 144 and the common electrode 146 of the first pixel structure 140-1 is constantly greater than zero volts, or is constantly zero volts. This ensures that the LCD panel 10 maintains high transmittance in the area where the first pixel structure 140-1 resides. By defining the see-through area 112 with multiple first pixel structures 140-1 that consistently maintain high transmittance, the shape of the see-through area 112 can be customized to meet various requirements. Neither the shape nor the angles of the see-through area 112 are restricted. Furthermore, there is no need for an additional border (or, in other words, an additional shielding design) between the see-through area 112 and the display area 114, maximizing the area of the display area 114 and improving the visual quality of the display device DP. Furthermore, there will be no problem of Newton's rings being easily generated near the boundary between the see-through area 112 and the display area 114.

In some embodiments, the display area 114 can provide a three-dimensional image, and the user can see physical objects behind the display device 10 through the transparent area 112. Because the LCD panel 10 has high transmittance in the transparent area 112, the user can more clearly see physical objects behind the display device DP, enhancing the user's three-dimensional and realistic experience. For example, in some embodiments, the transmittance of the transparent area 112 of the LCD panel 10 can be increased by 3.7 times compared to the transparent area of conventional LCD panels, but the present invention is not limited to this.

It should be noted that the following embodiments use the same component numbers and some of the contents of the previous embodiments, wherein the same reference numerals are used to represent the same or similar components, and the description of the same technical contents is omitted. For the description of the omitted parts, please refer to the previous embodiments, and the following embodiments will not be repeated.

Figure 6 is a top view schematic diagram of a first pixel structure of a liquid crystal display panel according to another embodiment of the present invention. Figure 7 is a top view schematic diagram of a second pixel structure of a liquid crystal display panel according to another embodiment of the present invention.

The second pixel structure 140-2 of the LCD panel 10A in FIG7 is identical to the second pixel structure 140-2 of the LCD panel 10 in FIG5 . The first pixel structure 140A-1 of the LCD panel 10A in FIG6 is similar to the first pixel structure 140-1 of the LCD panel 10 in FIG4 , except that the element 142 of the first pixel structure 140A-1 in FIG6 may be a thin-film transistor. Specifically, in the LCD panel 10A of Figures 6 and 7 , the element 142 of the first pixel structure 140A-1 further includes a semiconductor pattern 142d-1. The first electrode 142c-1 of the element 142 of the first pixel structure 140A-1 can serve as the gate of the thin-film transistor (TFT). The second electrode 142a-1 and third electrode 142b-1 of the element 142 of the first pixel structure 140A-1 can serve as the source and drain of the TFT, respectively electrically connected to two regions of the semiconductor pattern 142d-1. Furthermore, in the LCD panel 10A of Figures 6 and 7 , the second electrode 142a-1 of the element 142 of the first pixel structure 140A-1 (i.e., the source of the TFT) is structurally separated from the data line DL. In other words, the second electrode 142a-1 (i.e., the source of the thin-film transistor) of the element 142 of the first pixel structure 140A-1 is disconnected from the data line DL. Consequently, the pixel electrode 144 of the first pixel structure 140A-1 is unaffected by the operation of the data line DL, thereby maintaining the maximum transmittance of the transparent region 112 where the first pixel structure 140A-1 resides.

Figure 8 is a top-down schematic diagram of a first pixel structure of a liquid crystal display panel according to another embodiment of the present invention. Figure 9 is a top-down schematic diagram of a second pixel structure of a liquid crystal display panel according to another embodiment of the present invention. Figure 10 is a cross-sectional schematic diagram of the panel and backlight according to another embodiment of the present invention. Figure 10 corresponds to line segment II-II' in Figure 8 and line segment III-III' in Figure 9.

Referring to Figures 8, 9, and 10, the LCD panel 10B and its panel 100B of this embodiment are similar to the aforementioned LCD panel 10 and its panel 100. The primary difference between the two is that the LCD panel 10B of this embodiment operates in a normally black mode. That is, when the potential difference between the pixel electrode 144 and the common electrode 146B of the pixel structure 140 of the LCD panel 10B is a certain value greater than zero volts, the region where the pixel structure 140 is located achieves maximum transmittance. This certain value depends on the voltage required to operate the liquid crystal layer 130 and is not limited by the present invention.

Referring to Figures 8, 9, and 10, the panel 100B of the liquid crystal display panel 10B includes a first substrate 110, a plurality of pixel structures 140, a second substrate 120, and a liquid crystal layer 130. The first substrate 110 has a see-through region 112 and a display region 114 outside the see-through region 112. Each pixel structure 140 includes a device 142, a pixel electrode 144, and a common electrode 146B. The device 142 and the pixel electrode 144 are disposed on the first substrate 110, and the pixel electrode 144 is electrically connected to the device 142. The second substrate 120 is disposed opposite the first substrate 110. The liquid crystal layer 130 is disposed between the first substrate 110 and the second substrate 120. The plurality of pixel structures 140 include a plurality of first pixel structures 140B- 1 arrayed in the perspective area 112 and a plurality of second pixel structures 140B- 2 arrayed in the display area 114 .

Unlike the aforementioned LCD panel 10 and its panel 100, in this embodiment, the potential difference between the pixel electrode 144 and the common electrode 146B of each first pixel structure 140B-1 is constant and greater than zero volts. This constant is sufficient to maximize the transmittance of the region where the first pixel structure 140B-1 is located.

In this embodiment, element 142 of each pixel structure 140B includes a thin film transistor (TFT), which has a gate 142c, a semiconductor pattern 142d, a source 142a, and a drain 142b. Source 142a and drain 142b are electrically connected to two regions of semiconductor pattern 142d, and pixel electrode 144 is electrically connected to drain 142b. In this embodiment, the source 142a and drain 142b of the TFT in each second pixel structure 140B-2 are structurally separated. In this embodiment, the source 142a and drain 142b of the TFT in each first pixel structure 140B-1 are structurally connected. Thus, the pixel electrode 144 of the first pixel structure 140-1 is unaffected by the operation of the gate line GL. Through the signal provided by the data line DL, the potential difference between the pixel electrode 144 of the first pixel structure 140B-1 and the common electrode 146B can be kept constant at a value greater than zero volts, thereby maintaining the maximum transmittance of the transparent region 112 where the first pixel structure 140B-1 is located.

In this embodiment, the pixel electrode 144 and the common electrode 146B of the pixel structure 140 may be optionally both disposed on the first substrate 110. For example, in this embodiment, one of the pixel electrode 144 and the common electrode 146B may have multiple slits s, and the multiple slits s overlap with the other of the pixel electrode 144 and the common electrode 146B. In this embodiment, the panel 100B employs, for example, an in-plane switching mode. However, the present invention is not limited thereto; in other embodiments, the panel 100B may employ a fringe field switching mode or other modes.

In this embodiment, a light-shielding pattern layer 150 is disposed on the second substrate 120 and has a plurality of first openings 152 and a plurality of second openings 154. The plurality of first openings 152 of the light-shielding pattern layer 150 respectively overlap the plurality of pixel electrodes 144 of the plurality of first pixel structures 140B-1, the plurality of second openings 154 of the light-shielding pattern layer 150 respectively overlap the plurality of pixel electrodes 144 of the plurality of second pixel structures 140B-2, and the plurality of color filter patterns 160 are respectively disposed in the plurality of second openings 154 of the light-shielding pattern layer 150. Unlike the aforementioned panel 100, panel 100B further includes a light-transmitting insulating layer 170, which covers the light-shielding pattern layer 150 and the color filter pattern 160 and fills the first opening 152 of the light-shielding pattern layer 150. In short, the color filter pattern 160 may not be provided in the first opening 152 of the pixel electrode 144 overlapping the first pixel structure 140B-1, further improving the transmittance of the see-through region 112 where the first pixel structure 140B-1 is located.

Figure 11 is a top view schematic diagram of a first pixel structure of a liquid crystal display panel according to another embodiment of the present invention. Figure 12 is a top view schematic diagram of a second pixel structure of a liquid crystal display panel according to another embodiment of the present invention.

The second pixel structure 140C-2 of the LCD panel 10C in FIG12 is identical to the second pixel structure 140B-2 of the LCD panel 10B in FIG9 . The first pixel structure 140C-1 of the LCD panel 10C in FIG11 is similar to the first pixel structure 140B-1 of the LCD panel 10B in FIG8 . The difference between the two is that in the LCD panels 10C in FIG11 and FIG12 , the source 142a and drain 142b of the element 142 of the first pixel structure 140C-1 are structurally separated, and the pixel electrode 144C of the first pixel structure 140C-1 is in direct contact with the data line DL. Consequently, the pixel electrode 144C of the first pixel structure 140C-1 is unaffected by the operation of the gate line GL. Through the signal provided by the data line DL, the potential difference between the pixel electrode 144C and the common electrode 146B of the first pixel structure 140C-1 can be kept constant at a constant value greater than zero volts, so that the transmittance of the transparent area where the first pixel structure 140C-1 is located is kept at a maximum value.

10, 10A, 10B, 10C: LCD panel 20: Backlight 22: Aperture 22a: Edge 100, 100B: Panel 110: First substrate 112: Transparent area 114: Display area 120: Second substrate 130: Liquid crystal layer 140: Pixel structure 140-1, 140A-1, 140B-1, 140C-1: First pixel structure 140-2, 140B-2, 140C-2: Second pixel structure 142: Element 142a: Source 142a-1: Second electrode 142b: Drain 142b-1: Third electrode 142c: Gate 142c-1: First electrode 142d, 142d-1: Semiconductor pattern 144, 144C: Pixel electrodes 146, 146B: Common electrode 150: Light-shielding pattern layer 152: First opening 154: Second opening 160: Color filter pattern 170: Transparent insulating layer 200: Upper polarizer 300: Lower polarizer DL: Data line DP: Display device GL: Gate line i1, i2: Junction O: Overlap region R: Local area s: Slit z: Direction I-I', II-II', III-III': Line segments

Figure 1 is an exploded schematic diagram of a display device according to an embodiment of the present invention. Figure 2 is a top view and an enlarged schematic diagram of a portion of a panel according to an embodiment of the present invention. Figure 3 is a cross-sectional schematic diagram of the panel and backlight according to an embodiment of the present invention. Figure 4 is a top view schematic diagram of a first pixel structure of a liquid crystal display panel according to an embodiment of the present invention. Figure 5 is a top view schematic diagram of a second pixel structure of a liquid crystal display panel according to an embodiment of the present invention. Figure 6 is a top view schematic diagram of a first pixel structure of a liquid crystal display panel according to another embodiment of the present invention. Figure 7 is a top view schematic diagram of a second pixel structure of a liquid crystal display panel according to another embodiment of the present invention. Figure 8 is a top view schematic diagram of a first pixel structure of a liquid crystal display panel according to yet another embodiment of the present invention. Figure 9 is a top view schematic diagram of a second pixel structure of a liquid crystal display panel according to yet another embodiment of the present invention. Figure 10 is a schematic cross-sectional view of a panel and backlight source according to another embodiment of the present invention. Figure 11 is a schematic top view of a first pixel structure of a liquid crystal display panel according to another embodiment of the present invention. Figure 12 is a schematic top view of a second pixel structure of a liquid crystal display panel according to another embodiment of the present invention.

10: LCD panel

20: Backlight

22: Opening

22a: Edge

100: Panel

112: Perspective Area

114: Display area

200: Upper polarizer

300: Lower polarizer

DP: Display Device

i1: Junction

R: Local

z: direction

Claims (9)

A display device includes: a first substrate having a see-through region and a display region outside the see-through region; a plurality of pixel structures, each pixel structure including a component, a pixel electrode, and a common electrode, the component and the pixel electrode being disposed on the first substrate, and the pixel electrode being electrically connected to the component; a second substrate disposed opposite the first substrate; and a liquid crystal layer disposed between the first and second substrates. The pixel structures include a plurality of first pixel structures arrayed in the see-through region and a plurality of second pixel structures arrayed in the display region, wherein a potential difference between the pixel electrode and the common electrode of each first pixel structure is a constant value greater than zero volts or is constant at zero volts; and A backlight source, wherein a liquid crystal display panel includes the first substrate, the pixel structures, the second substrate, and the liquid crystal layer. The backlight source is disposed under the liquid crystal display panel and has an opening. An edge of the opening of the backlight source corresponds to a boundary between the first pixel structures and the second pixel structures. The display device as described in claim 1 further includes: a light-shielding pattern layer, disposed on the second substrate, and having a plurality of first openings and a plurality of second openings, wherein the first openings of the light-shielding pattern layer respectively overlap with the plurality of pixel electrodes of the first pixel structures, and the second openings of the light-shielding pattern layer respectively overlap with the plurality of pixel electrodes of the second pixel structures; a plurality of color filter patterns, respectively disposed in the second openings of the light-shielding pattern layer; and a light-transmitting insulating layer, covering the light-shielding pattern layer and the color filter patterns, and filling the first openings of the light-shielding pattern layer. A display device as described in claim 2, wherein the liquid crystal display panel includes the first substrate, the pixel structures, the second substrate, the light-shielding pattern layer, the color filter patterns, the light-transmitting insulating layer and the liquid crystal layer; the edge of the opening of the backlight source corresponds to a junction between the first openings and the second openings of the light-shielding pattern layer. The display device as described in claim 1 further includes: a light-shielding pattern layer, disposed on the second substrate and having a plurality of first openings and a plurality of second openings, wherein the first openings of the light-shielding pattern layer respectively overlap with the plurality of pixel electrodes of the first pixel structures, and the second openings of the light-shielding pattern layer respectively overlap with the plurality of pixel electrodes of the second pixel structures; and a plurality of color filter patterns, respectively disposed in the second openings of the light-shielding pattern layer; wherein the common electrodes of the second pixel structures cover the color filter patterns, and the common electrodes of the first pixel structures are disposed in the first openings of the light-shielding pattern layer. A display device as described in claim 4, wherein the liquid crystal display panel includes the first substrate, the pixel structures, the second substrate, the light-shielding pattern layer, the color filter patterns and the liquid crystal layer; the edge of the opening of the backlight source corresponds to a junction between the first openings and the second openings of the light-shielding pattern layer. The display device as described in claim 1, wherein the element of the second pixel structure includes a thin film transistor, the thin film transistor having a gate, a semiconductor pattern, a source, and a drain, and the source and the drain are electrically connected to two regions of the semiconductor pattern, respectively; and the element of the first pixel structure includes a first electrode, a second electrode, and a third electrode, the shapes of the first electrode, the second electrode, and the third electrode are substantially the same as the gate, the source, and the drain, respectively, and an overlapping region of the first electrode, the second electrode, and the third electrode is not provided with any semiconductor pattern. A display device as described in claim 1, wherein the element of each pixel structure includes a thin film transistor, the thin film transistor having a gate, a semiconductor pattern, a source and a drain, the source and the drain being electrically connected to two regions of the semiconductor pattern, and the pixel electrode being electrically connected to the drain; each pixel structure further includes a data line disposed adjacent to the thin film transistor; the data line of each second pixel structure is electrically connected to the source of the thin film transistor, and the data line of each first pixel structure is structurally separated from the source of the thin film transistor. A display device as described in claim 1, wherein the element of each pixel structure includes a thin film transistor, the thin film transistor having a gate, a semiconductor pattern, a source and a drain, the source and the drain being electrically connected to two regions of the semiconductor pattern, and the pixel electrode being electrically connected to the drain; the source and the drain of the thin film transistor of each second pixel structure are structurally separated, and the source and the drain of each thin film transistor of the first pixel structure are structurally connected. The display device of claim 1, wherein the element of each pixel structure includes a thin film transistor having a gate, a semiconductor pattern, a source, and a drain, the source and the drain being electrically connected to two regions of the semiconductor pattern, and the pixel electrode being electrically connected to the drain; each pixel structure further includes a data line electrically connected to the source of the thin film transistor; and the data line of each first pixel structure is in direct contact with the pixel electrode.