TWI655485B - monitor - Google Patents

Abstract

The display contains passive panels as well as active panels. The passive panel includes a plurality of first electrodes and at least one second electrode to form a plurality of passive pixels. The active panel is optically coupled to the passive panel. The active panel includes an active element array substrate and has a plurality of active pixels. The size of the passive pixels is equal to or larger than the size of the active pixels.

Description

monitor

The invention relates to a display.

In recent years, due to the characteristics of light, thin, small and low power consumption, liquid crystal displays have been widely used in electronic imaging products such as notebook computers, digital cameras, and televisions, and have gradually replaced traditional cathode ray tube displays. Generally speaking, a liquid crystal display is composed of a liquid crystal panel and a backlight module. The liquid crystal panel mainly uses the rotation of the liquid crystal molecules and the polarizing plate to change the light flux in different regions and cause differences in brightness and darkness in different regions to achieve the purpose of image display. Since the liquid crystal itself does not have light emitting characteristics, it is necessary to rely on a backlight module to provide a light source. The backlight module can be divided into a side-light type backlight module and a direct type backlight module.

With the development of liquid crystal displays toward large size, some people have already cut direct-type backlight modules into M * N blocks, and according to the image content of each block, the backlight corresponding to each block The source brightness is adjusted, that is, local dimming technology, to improve the contrast ratio of the picture. However, the size of the dimming block is limited by the backlight source and cannot be adjusted to the pixel level, and it may not be sufficiently dark; furthermore, because the direct type backlight module requires a longer mixing distance to achieve uniform mixing Effect of light As a result, the thickness of the direct type backlight module is relatively thick, which makes the direct type backlight module less suitable for the manufacture of thin displays. Although the side-illumination type backlight module has the advantage of being thinner, it is difficult to adjust the brightness of the backlight corresponding to each block in a two-dimensional partition block like a direct-type backlight module.

In various embodiments of the present invention, through the setting of the passive display panel, the light of the backlight module can be adjusted in two-dimensional partition blocks, so that it is not necessary to rely on the direct-type backlight module for each block. Adjust the backlight brightness. Thereby, the effect of two-dimensional local dimming can be achieved.

According to some embodiments of the present invention, the display includes a passive panel and an active panel. The passive panel includes a plurality of first electrodes and at least one second electrode to form a plurality of passive pixels. The active panel is optically coupled to the passive panel. The active panel includes an active element array substrate and has a plurality of active pixels. The size of the passive pixels is equal to or larger than the size of the active pixels.

In some embodiments of the present invention, the at least one second electrode includes a plurality of second electrodes, and an edge of at least one of the plurality of first electrodes and the plurality of second electrodes is wavy.

In some embodiments of the present invention, the wave shape is a periodic waveform.

In some embodiments of the present invention, the active panel includes a color filter, and the color filter includes at least three color filter units of different colors, which respectively correspond to three settings of the active pixels of the active element array substrate. , Wherein, the three color filter units with different colors are arranged along the first direction, and the wave shape substantially extends toward the first direction.

In some embodiments of the present invention, the wave-shaped wavelength is an integer multiple of the width of the three color filter units along the first direction.

In some embodiments of the present invention, the active panel includes a color filter, and the color filter includes at least three color filter units of different colors, which respectively correspond to three settings of the active pixels of the active element array substrate. Wherein, the three color filter units with different colors of the color filter are arranged along the first direction, and the wavy substantially extends toward the second direction, and the first direction is perpendicular to the second direction.

In some embodiments of the present invention, the wave-shaped wave width is an integer multiple of the width of the three color filter units with different colors in the first direction.

In some embodiments of the present invention, the display further includes a polarizer, wherein the passive panel and the active panel are liquid crystal panels, and the passive panel and the active panel share a polarizer.

In some embodiments of the present invention, the passive panel includes a nematic liquid crystal layer sandwiched between a plurality of first electrodes and at least one second electrode.

In some embodiments of the present invention, the active panel includes a horizontally arranged liquid crystal layer, and the active pixels are used to control the horizontally arranged liquid crystal layer.

In some embodiments of the present invention, the passive panel includes a first substrate, a second substrate, a display medium, and a driving chip. The display medium is located between the first substrate and the second substrate, wherein a plurality of first electrodes are located between the first substrate and the display medium, and at least one second electrode is located between the second substrate and the display medium. between. The driving chip is disposed on the first substrate or the second substrate, and is electrically connected to the plurality of first electrodes and at least one second electrode.

In some embodiments of the present invention, the passive panel further includes a light-shielding electrode, wherein at least one second electrode includes a plurality of second electrodes, and the light-shielding electrode corresponds to a gap between the plurality of first electrodes or a plurality of second electrodes, wherein the light-shielding electrode It is disposed on the first substrate or the second substrate provided on the driving wafer.

In some embodiments of the present invention, the passive panel further includes a fan-out circuit, which is disposed on the first substrate or the second substrate provided on the driving chip to connect one of the plurality of first electrodes and the plurality of second electrodes. This is to drive the chip, in which the fan-out circuit is made of the same material as the light-shielding electrode.

In some embodiments of the present invention, when the driving wafer is disposed on the first substrate, the light shielding electrode is disposed between the first electrode and the first substrate; or when the driving wafer is disposed on the second substrate, the light shielding electrode is disposed on Between at least one second electrode and the second substrate.

In some embodiments of the present invention, the passive panel further includes a light-shielding electrode corresponding to the gaps between the plurality of first electrodes, and the driving chip and the light-shielding electrode are disposed on the first substrate.

In some embodiments of the present invention, the passive panel further includes a fan-out circuit, which is disposed on the first substrate to connect the first electrode to the driving chip, wherein the fan-out circuit and the light shielding electrode are made of the same material.

In some embodiments of the present invention, the second substrate is closer to the active panel than the first substrate.

In some embodiments of the present invention, the first electrode and the plurality of second electrodes are respectively arranged in a one-dimensional manner, and the first electrode and the second electrode are overlapped to form a shape. Into passive pixels.

In some embodiments of the present invention, the first electrodes are arranged in a two-dimensional manner, wherein the first electrodes and the second electrodes overlap to form a passive pixel.

100‧‧‧ Display

110‧‧‧ backlight

313‧‧‧scan line

314‧‧‧active element

120‧‧‧Polarizer

130‧‧‧shared polarizer

140‧‧‧polarizing plate

200‧‧‧ Passive Panel

210‧‧‧First substrate

220‧‧‧Display media

230‧‧‧second substrate

242‧‧‧fan-out circuit

244‧‧‧fan-out circuit

246‧‧‧fan-out circuit

248‧‧‧Leader

250‧‧‧ Colloid

260‧‧‧Dielectric layer

270‧‧‧electrode pad

280‧‧‧Shading electrode

290‧‧‧Sealant

300‧‧‧ Active Panel

310‧‧‧ Active Element Array Substrate

311‧‧‧ substrate

312‧‧‧data line

315‧‧‧pixel electrode

315O‧‧‧Slit Pattern

320‧‧‧Display media

330‧‧‧Color Filter

R, G, B‧‧‧ color filter units

E1‧‧‧First electrode

E2‧‧‧Second electrode

IC1, IC2, IC3‧‧‧ driver chip

PP‧‧‧ Passive Pixel

AP‧‧‧active pixel

CB‧‧‧ conductive particles

O1‧‧‧ opening

BM‧‧‧Black Matrix

OA‧‧‧Opening area

D1‧‧‧ first direction

D2‧‧‧ Second direction

WP‧‧‧Width

AW‧‧‧Wave

WW‧‧‧wavelength

G1‧‧‧ Clearance

G2‧‧‧ Clearance

FIG. 1 is a schematic cross-sectional view of a display according to some embodiments of the present invention.

FIG. 2A is a schematic top view of a passive panel of a display according to some embodiments of the present invention.

FIG. 2B is an enlarged top view diagram of part 2B of FIG. 2A.

Figure 2C is a schematic cross-sectional view taken along line 2C-2C 'of Figure 2B.

FIG. 3A is a schematic top view of an active element array substrate of an active panel of a display according to some embodiments of the present invention.

FIG. 3B is a schematic top view of a color filter of an active panel of a display according to some embodiments of the present invention.

FIG. 4 is a schematic enlarged top view of a display according to some embodiments of the present invention.

FIG. 5 is a schematic enlarged top view of a display according to some embodiments of the present invention.

6A to 6D are schematic top views of a display according to some embodiments of the present invention.

FIG. 7 is a schematic top view of a passive panel of a display according to some embodiments of the present invention.

Several embodiments of the present invention will be disclosed in the following drawings. For the sake of clear description, many practical details will be described in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the present invention, these practical details are unnecessary. In addition, in order to simplify the drawings, some conventional structures and elements will be shown in the drawings in a simple and schematic manner.

In this article, spatial relative terms, such as "lower", "lower", "low", "up", "upper", etc., are used to conveniently describe the relative relationship between one element or feature and other elements or features in the diagram . In addition to the orientations shown in the drawings, these spatial relative terms can also be used to help understand the different orientations of components when used or operated. When the component is turned to other orientations (such as rotated 90 degrees or other orientations), the spatial relative description used in this article can also help to understand. In addition, the description of "A-element optically-coupled B-element" in this article not only means that the light beam passing through or coming from the A element can directly enter the B element, as long as the light beam passing through or coming from the A element can enter the B element, the A element and B are also allowed There are other optical elements between the elements.

FIG. 1 is a schematic cross-sectional view of a display 100 according to some embodiments of the present invention. The display 100 includes a backlight light source 110, a passive panel 200 and an active panel 300. The backlight light source 110 is configured to emit light toward the passive panel 200. The passive panel 200 is used to modulate light from the backlight source 110. The active panel 300 is used to modulate light passing through the passive panel 200.

In some embodiments of the present invention, the backlight light source 110 is a side The backlight module may include a light source and a light guide plate, and the light guide plate has a light entrance surface and a light exit surface. The light source emits light toward the light incident surface of the light guide plate, and the light advances and reflects in the light guide plate, exits from the light exit surface, and then reaches the passive panel 200 in the form of planar light. Of course, the scope of the present invention should not be limited in this way. In other embodiments, the backlight source 110 may be a direct type backlight module. Alternatively, the backlight source 110 may be omitted and the ambient light may be used as the light source.

In some embodiments of the present invention, the passive panel 200 includes a first substrate 210, a plurality of first electrodes E1, a display medium 220, at least one second electrode E2, and a second substrate 230. The second substrate 230 is closer to the active panel 300 than the first substrate 210. The first electrode E1 and the second electrode E2 may be disposed on the first substrate 210 and the second substrate 230, respectively. The display medium 220 is interposed between the first substrate 210 and the second electrode E2, and the display medium 220 is located between the first electrode E1 and the second electrode E2.

Here, the electrode layer is located on a side of the substrate facing the display medium 220. Specifically, the first electrode E1 is located between the first substrate 210 and the display medium 220, and the second electrode E2 is located between the second substrate 230 and the display medium 220. Of course, the scope of the present invention should not be limited in this way. The relative position of the electrode layer and the substrate may have other changes. For example, the electrode layer may be located on the side of the substrate facing away from the display medium 220. In some embodiments of the present invention, the potentials of the first electrode E1 and the second electrode E2 are different, thereby generating an electric field distribution. For example, the first electrode E1 is a signal electrode, and the second electrode E2 is a ground electrode. Of course, the scope of the present invention should not be limited in this way. In some embodiments, the first electrode E1 is a ground electrode and the second electrode E2 is a signal electrode.

In some embodiments of the present invention, the display medium 220 is not A self-luminous material or a self-luminous material. For example, the display medium 220 may be a liquid crystal layer or the like, such as a nematic liquid crystal layer. Alternatively, in other embodiments, the display medium 220 may be an electrophoretic display layer, an organic light-emitting display layer, or the like. When the display medium 320 is made of a self-luminous material, the configuration of the backlight light source 110 may be omitted.

In some embodiments of the present invention, the active panel 300 and the passive panel 200 are optically coupled. The active panel 300 includes an active element array substrate 310, a display medium 320, and a color filter 330. The display medium 320 may be interposed between the active device array substrate 310 and the color filter 330. In some embodiments of the present invention, the display medium 320 is a non-self-luminous material. For example, the display medium 220 may be a liquid crystal layer or the like, such as a horizontal alignment liquid crystal layer. Alternatively, in other embodiments, the display medium 220 may be an electrophoretic display layer or the like.

In some embodiments, when the display medium 220 and the display medium 320 are liquid crystal layers, the display 100 may include a polarizer 120, a common polarizer 130, and a polarizer 140. The passive panel 200 is sandwiched between the polarizer 120 and the common polarizer 130, and the active panel 300 is sandwiched between the common polarizer 130 and the polarizer 140, wherein the passive panel 200 and the active panel 300 share the common polarizer 130. For example, the passive panel 200 may be a twisted nematic (TN) liquid crystal panel, and the active panel 300 is an in-plane switching (IPS) liquid crystal panel. At this time, the penetration axis of the common polarizing plate 130 may be clamped 90 degrees and 0 degrees with the alignment directions of the first substrate 210 and the second substrate 230 of the passive panel 200 (the passive panel 200 is white without voltage applied ( (normally white)), the penetration axis of the common polarizing plate 130 may be substantially parallel to the alignment direction of the active panel 300. In this way, the polarizer can be matched with the liquid crystal layer to control the overall transmittance and achieve a change in brightness.

Although not shown here, it should be understood that an adhesive layer may be provided between the backlight source 110 and the passive panel 200 or between the passive panel 200 and the active panel 300 to relatively fix the two.

The detailed configuration of the passive panel 200 and the active panel 300 is introduced in order below. The detailed configuration of the passive panel 200 is shown in FIGS. 2A to 2C, and the detailed configuration of the active panel 300 is shown in FIGS.

First, referring to FIG. 1 and FIG. 2A, FIG. 2A is a schematic top view of a passive panel 200 of a display 100 according to some embodiments of the present invention. In some embodiments of the present invention, the first electrode E1 and the second electrode E2 are respectively arranged in a two-dimensional manner. Specifically, the first electrode E1 extends toward the first direction D1, the second electrode E2 extends toward the second direction D2, and the first electrode E1 and the second electrode E2 overlap to form a plurality of passive pixels PP.

In some embodiments of the present invention, the first electrode E1 and the second electrode E2 are made of a transparent conductive material, such as a metal oxide (such as indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc, etc.). Oxide, indium germanium zinc oxide, or other suitable oxides, or a stacked layer of at least two of the foregoing), a carbon nanotube / rod, an organic conductive material, or a stacked layer of at least two of the foregoing. Here, the edges of the first electrode E1 and the second electrode E2 can be matched with the subsequent active pixel AP. For example, the edges of the first electrode E1 and the second electrode E2 can be wavy or straight, and Subsequent active pixel AP matching achieves better dark state performance.

In some embodiments of the present invention, the passive panel 200 includes a driving chip IC1, IC2, fan-out circuits 242, 244, a gel 250 containing conductive particles CB (see FIG. 2C), and a sealant 290. Driver IC IC1, IC2 settings The first substrate 210 is electrically connected to the flexible circuit board 400. The fan-out circuits 242 and 244 are provided on the first substrate 210 provided on the driving chips IC1 and IC2. The fan-out circuit 242 is used to connect the first electrode E1 to the driving chip IC1, and the fan-out circuit 244 is used to connect the second electrode E2 to the driving chip IC2. In some embodiments of the present invention, the fan-out circuits 242 and 244 may be formed of a material with good conductivity. For example, the fan-out circuits 242, 244 may be formed by patterning a metal layer (eg, a copper layer).

In some embodiments of the present invention, the colloid 250 and the sealant 290 are located between the first substrate 210 and the second substrate 230 (refer to FIG. 1), and connect the first substrate 210 and the second substrate 230 (refer to FIG. 1). ). Here, the second electrode E2 is electrically connected to the fan-out circuit 244 through the conductive particles CB (see FIG. 2C) in the colloid 250, and details thereof will be described later.

In this embodiment, the sealant 290 is located in the peripheral area PA so that the first substrate 210 and the second substrate 230 (see FIG. 1) are assembled together. From another aspect, the sealant 290 is disposed around the display area VA. The material of the sealant 290 is, for example, a thermosetting adhesive, a light-curing adhesive, or other suitable materials. The display medium 220 is located between the first substrate 210, the second substrate 230 (see FIG. 1), and the sealant 290. In other words, the display medium 220 is provided in a storage space between the first substrate 210, the second substrate 230 (see FIG. 1), and the sealant 290.

FIG. 2B is an enlarged top view diagram of part 2B of FIG. 2A. Figure 2C is a schematic cross-sectional view taken along line 2C-2C 'of Figure 2B. Refer to FIGS. 2A to 2C at the same time. In some embodiments of the present invention, the passive panel 200 includes a dielectric layer 260 (refer to FIG. 2C), which separates the first electrode E1 from the fan-out circuit 244. Here, the dielectric layer 260 may be formed of an insulating material. For example, The dielectric layer 260 may be made of an inorganic material (for example, silicon oxide, silicon nitride, silicon oxynitride, other suitable materials, or a combination thereof), an organic material (for example, photoresist, polyimide (PI), Composed of benzocyclobutene (BCB), epoxy resin (Epoxy), perfluorocyclobutane (PFCB) or other suitable materials.

The dielectric layer 260 has an opening O1 to expose the fan-out circuit 244. The colloid 250 is located on the opening O1 and can be filled in the opening O1. The conductive particles CB in the colloid 250 may be located in the opening O1 to electrically connect the second electrode E2 and the fan-out circuit 244 through the opening O1. Here, the material of the conductive particles CB may be a material with good conductivity, such as gold, silver, copper, and the like. Through the conductive particles CB in the colloid 250, the second electrode E2 on the second substrate 230 can be electrically connected to the fan-out circuit 244 and the driving chip IC2 on the first substrate 210. Here, the second electrode E2 extends to the upper surface of the gel 250, and the fan-out circuit 244 extends to the lower surface of the gel 250.

In some embodiments, the passive panel 200 may optionally include an electrode pad 270, which may be formed by patterning the same electrode layer as the first electrode E1. The electrode pad 270 may fill the opening O1 and be located between the conductive particles CB and the fan-out circuit 244, and the conductive particles CB may be electrically connected to the fan-out circuit 244 through the electrode pad 270. Thereby, the area of the electrode pad 270 can be increased, and the positioning of the conductive particles CB can be facilitated.

In this embodiment, the driving chips IC1, IC2, and the fan-out circuits 242, 244 are disposed on the first substrate 210 far from the active panel 300 (refer to FIG. 1). However, the scope of the present invention should not be limited thereby. In other embodiments, the driving ICs IC1 and IC2 and the fan-out circuits 242 and 244 may be disposed on the second substrate 230 (see FIG. 1) adjacent to the active panel 300. At this time, the first electrode E1 located on the first substrate 210 can also be made by the arrangement of the conductive particles CB. The fan-out circuit 242 and the driving chip IC1 are electrically connected.

FIG. 3A is a schematic top view of the active element array substrate 310 of the active panel 300 of the display 100 according to some embodiments of the present invention. Refer to FIG. 1 and FIG. 3A simultaneously. The active device array substrate 310 includes a substrate 311, data lines 312, scan lines 313, and active pixel APs. The data lines 312 and the scan lines 313 are staggered, and the active device array substrate 310 has a plurality of pixel regions. Each active pixel AP corresponds to each pixel region. Each active pixel AP includes an active element 314 and a pixel electrode 315. The active device 314 is electrically connected to the data line 312 and the scan line 313. The active device 314 conducts the data line 312 and the pixel electrode 315 through the control of the scan line 313. Thereby, the active pixel AP can be used to control the display medium 320 (see FIG. 1).

In some embodiments, the pixel electrode 315 may include a slit pattern 3150, and the active device array substrate 310 may further include a common electrode (not shown), and the common electrode is connected to a common potential. In this way, the common electrode (not shown) is matched with the pixel electrode 315, and the display medium 320 of each active pixel AP is controlled through the Fringe Field Switching mode (refer to FIG. 1). In other modified embodiments, the active panel 300 may also drive the display medium 320 in other types of in-plane switching (In-Plane Switching) mode. Although the display medium 320 is controlled by a horizontal electric field and a horizontal alignment here, the scope of the present invention should not be limited by this. In other embodiments, the active panel 300 may use a vertical electric field to control the display medium 320, such as a nematic liquid crystal panel. Alternatively, in other embodiments, the active panel 300 may control the display medium 320 with a horizontal electric field and a vertical alignment, such as a vertical alignment (VA) liquid crystal panel.

FIG. 3B is a schematic top view of the color filter 330 of the active panel 300 of the display 100 according to some embodiments of the present invention. Refer to FIG. 1, FIG. 3A and FIG. 3B simultaneously. In some embodiments of the present invention, the color filter 330 includes at least three color filter units R, G, and B with different colors, which are respectively corresponding to three active pixel APs (refer to FIG. 3A). The color filter 330 may further include a black matrix BM to define an opening area OA of the active pixel AP (refer to FIG. 3A), and the color filter units R, G, and B respectively correspond to different active pixel APs (refer to FIG. (Figure 3A).

Although the substrate of the color filter 330 is different from the substrate 311 (see FIG. 3A), in other embodiments, at least one of the color filter units R, G, B, and the black matrix BM may be selectively selected. If it is disposed on the substrate 311, it can be called a color filter on array (COA) or a black matrix on array (BOA). Therefore, the scope of the present invention should not be limited by the configuration of the color filter 330.

FIG. 4 is a schematic enlarged top view of a display 100 according to some embodiments of the present invention. Here, the first electrode E1 and the second electrode E2 of the passive panel 200 are shown on the color filter 330 in FIG. 3B to facilitate observing the relative positional relationship between the passive panel 200 and the active panel 300. Here, the first electrode E1 of the passive panel 200 extends substantially toward the first direction D1, and the second electrode E2 of the passive panel 200 extends substantially toward the second direction D2. The first direction D1 is perpendicular to the second direction D2.

In some embodiments of the present invention, three color filter units R, G, and B having different colors are arranged along the first direction D1. # 2 of the passive panel 200 The passive pixel PP composed of one electrode E1 and the second electrode E2 covers the three color filter units R, G, and B with different colors. Specifically, the passive pixel PP formed by the first electrode E1 and the second electrode E2 covers the opening areas OA of the three active pixels AP. As a result, the light output by the active pixel AP has been modulated by the passive pixel PP, so as to achieve the pixel level brightness control of the backlight block.

In various embodiments of the present invention, the size of the passive pixel PP is equal to or larger than the size of the active pixel AP. One passive pixel PP can cover more than three active pixel APs, and is not limited to those shown in the figure. painted. For example, a passive pixel PP can cover a continuous active pixel AP of an integer multiple of three. In other embodiments, one passive pixel PP can cover more than three continuous active pixel APs of any shape. Alternatively, in other embodiments, one passive pixel PP may cover only one active pixel AP.

Here, a gap G1 is provided between the plurality of first electrodes E1, and a gap G2 is provided between the plurality of second electrodes E2. In some embodiments of the present invention, the gap G1 and the gap G2 are wavy according to the shape of the opening area OA of the active pixel AP. For example, the edge of the first electrode E1 is linear and the edge of the second electrode E2 is linear. The edges are wavy, so that the passive pixel PP can cover the active pixel AP, and the gap G1 and the gap G2 are prevented from exposing the opening area OA.

Here, only the edge of the second electrode E2 is taken as an example of a wave shape, and the edge of the first electrode E1 is kept straight, but the scope of the present invention should not be limited by this. In other embodiments, in order to match the active pixel AP, the edges of the first electrode E1 and the second electrode E2 may be wavy. Alternatively, in other embodiments, the edge of the first electrode E1 is wavy, and the edge of the second electrode E2 is kept straight. In some embodiments of the present invention, the aforementioned wave shape is a periodic waveform. In some embodiments, the edges of the first electrode E1 and the second electrode E2 may be designed to be straight.

However, in some embodiments, when the passive panel 200 and the active panel 300 are poorly aligned, the gap G2 easily exposes the opening area OA, and some of the light is not modulated by the passive pixel PP. In addition, the exposed light may affect vision Effects, such as red, green, and blue bright lines. FIG. 5 is a schematic enlarged top view of a display 100 according to some embodiments of the present invention. This embodiment is similar to the embodiment in FIG. 4 except that in this embodiment, the passive panel 200 further includes a light shielding electrode 280, which is disposed corresponding to the gap G2 of the second electrode E2, and has a corresponding corrugated edge, wherein the light shielding electrode 280 is provided on the first substrate 210 provided on the driving chips IC1 and IC2 (refer to FIGS. 2A and 2C). In some embodiments of the present invention, the fan-out circuit 244 and the light-shielding electrode 280 are formed by patterning the same layer, and the material of the fan-out circuit 244 and the light-shielding electrode 280 is the same.

Therefore, even when the passive panel 200 and the active panel 300 are poorly aligned and the gap G2 of the passive panel 200 is exposed to the opening area OA, the light shielding electrode 280 of the passive panel 200 can shield the gap G2 of the passive panel 200 so as to prevent The light modulated by the panel 200 is transmitted to the open area OA of the active panel 300.

In this embodiment, when the driving chips IC1 and IC2 are disposed on the first substrate 210, the light shielding electrode 280 is also disposed between the first electrode E1 and the first substrate 210, but the scope of the present invention should not be limited in this way. In other embodiments, when the driving chips IC1 and IC2 are disposed on the second substrate 230, the light shielding electrode 280 is disposed between at least one second electrode E2 and the second substrate 230.

Here, the edge of the light-shielding electrode 280 may be changed according to the shape of the gap G2, and is, for example, a waveform. Of course, the scope of the present invention should not be limited in this way. In other embodiments, the light-shielding electrode 280 may be a straight strip, and does not change with the shape of the gap G2. In this embodiment, the width of the light shielding electrode 280 is approximately equal to the width of the gap G2. In other embodiments, the width of the light shielding electrode 280 may be smaller than the width of the gap G2.

In addition to using the light shielding electrode 280 to avoid the problem of poor bright lines to the group, the present invention also provides other embodiments to improve the problem of poor bright lines to the group. 6A to 6D are schematic top views of a display according to some embodiments of the present invention. FIGS. 6A to 6D illustrate various possible combinations of the passive pixel PP of the passive panel 200 and the active pixel AP of the active panel 300. Here, for convenience of illustration, the gap G1 between the first electrode E1 and the gap G2 between the second electrode E2 is not actually drawn, but is only represented by a black line.

In some embodiments, by designing the undulating wavelength of the edge of the first electrode E1 and the undulating amplitude of the edge of the second electrode E2 can correspond to at least three color filter units R, G, and B, when the passive panel When the pairing of 200 and the active panel 300 is bad, uniform red, green, and blue light can be transmitted to form uniform white light. In this way, since the transmitted white light has a small visual impact, it can improve the problem of poor bright lines to the group without having to provide the aforementioned light shielding electrode (see FIG. 5). Specifically, here, the wavy wavelength of the edge of the first electrode E1 and the wavy amplitude of the edge of the second electrode E2 can be designed as integer multiples of the three color filter units R, G, and B. The embodiments in FIGS. 6A to 6D are described in detail below.

In the embodiment of FIG. 6A, the edge of the first electrode E1 is a wave. And the undulating wavelength WW of the edge of the first electrode E1 is substantially an integer multiple of the width WP of the three color filter units R, G, and B in the first direction D1. Therefore, when the alignment is bad, the light leakage between the passive pixels PP in each wavelength WW range passes through the same number of color filter units R, G, and B, and then forms white light to prevent color deviation of the image display.

In some embodiments of the present invention, the edge-wave-shaped wave width AW (ie, twice the amplitude) of the second electrode E2 is equal to the width WP of the three color filter units R, G, and B in the first direction D1. Multiples. Therefore, when the alignment is bad, the light leakage between the passive pixels PP passes through the same number of color filter units R, G, and B in each AW range, thereby forming white light, so as to avoid the color deviation of the image display. . Here, the wave shape of the edge of the first electrode E1 and the edge of the second electrode E2 includes at least a sine wave waveform.

In some embodiments of the present invention, the two edges of the second electrode E2 are wavy, and the edges of each second electrode E2 exhibit a uniform density. Here, the wave-like density of the edge of one second electrode E2 is greater than the wave-like density of the edge of the other second electrode E2, thereby preventing interference problems that may be caused by a uniform repeating pattern.

The embodiment in FIG. 6B is similar to the embodiment in FIG. 6A, except that the wavy shape of the edge of the first electrode E1 and the edge of the second electrode E2 includes at least a triangular waveform. The other settings are similar to those in FIG. 6A and will not be repeated here.

The embodiment of FIG. 6C is similar to the embodiment of FIG. 6A, except that the wavy density of a part of the edge of a second electrode E2 is greater than the wavy density of another part of the edge of the second electrode E2, thereby Prevents possible interference problems caused by uniform repeating patterns. Here, the edge of the first electrode E1 The wave shape of the edge and the edge of the second electrode E2 includes at least a sine wave waveform. The other settings are similar to those in FIG. 6A and will not be repeated here.

The embodiment in FIG. 6D is similar to the embodiment in FIG. 6C, except that the wavy shape of the edge of the first electrode E1 and the edge of the second electrode E2 includes at least a triangular waveform. The other settings are similar to those in FIG. 6C and will not be repeated here.

FIG. 7 is a schematic top view of the passive panel 200 of the display 100 according to some embodiments of the present invention. In some embodiments of the present invention, the passive panel 200 includes a first substrate 210, a first electrode E1, a display medium 220, a second electrode E2, a second substrate 230 (see FIG. 1), a driving chip IC3, and a fan-out circuit. 246 and lead 248. As shown in FIG. 1, the first electrode E1 is located between the first substrate 210 and the display medium 220, and the second electrode E2 is located between the second substrate 230 and the display medium 220. In this embodiment, the first electrode E1 is arranged in a two-dimensional manner, and the second electrode E2 is a full-surface electrode. The first electrode E1 and the second electrode E2 overlap to form a passive pixel PP. The passive pixel PP can be matched with the active pixel. For detailed matching, refer to Figures 4 to 6D, which will not be repeated here.

In this embodiment, the fan-out circuit 246 and the lead 248 are disposed on the first substrate 210 provided on the driving chip IC3. The lead wire 248 connects the first electrode E1 to the fan-out circuit 246, thereby electrically connecting the first electrode E1 to the driving chip IC3. In some embodiments, the leads 248 and the fan-out circuit 246 can be formed by patterning the same layer.

It should be understood that, here, the driving chip IC3, the fan-out circuit 246, and the lead 248 are disposed on the first substrate 210 away from the active panel 300. However, The scope of the present invention should not be limited in this way. In some embodiments, the driving chip IC3, the fan-out circuit 246, and the lead 248 may be disposed on the second substrate 230 adjacent to the active panel 300. At this time, the first electrode E1 may be a full-surface electrode, and the second electrode E2 is arranged in a two-dimensional manner.

In various embodiments of the present invention, through the setting of the passive panel, the light of the backlight module can be adjusted in two-dimensional partition blocks, so that it is not necessary to rely on the direct-type backlight module for each block. Adjust the backlight brightness. Thereby, the effect of two-dimensional local dimming can be achieved. The pixels of the passive panel can be matched with the pixels of the active panel to have a specific shape of the edge setting. In addition, in order to prevent the bad combination of the passive panel and the active panel and the light is not modulated by the passive panel, a light shielding electrode may be provided therein. Alternatively, the passive pixels of the passive panel can be designed to have a waveform and match with the active pixels so that when the passive panel and the active panel are poorly aligned, the active pixels not covered by the passive pixels have a uniform red color. , Green and blue quantity, which can form white light.

Although the present invention has been disclosed in various embodiments as above, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and retouches without departing from the spirit and scope of the present invention. The scope of protection shall be determined by the scope of the attached patent application.

Claims (18)

A display includes: a passive panel, wherein the passive panel includes a plurality of first electrodes and at least one second electrode to form a plurality of passive pixels, wherein the plurality of first electrodes and at least one of the second electrodes are at least The edge of one of them is wavy; and an active panel is optically coupled with the passive panel, wherein the active panel includes an active element array substrate having a plurality of active pixels, of which The size of the passive pixels is equal to or larger than the size of the active pixels. The display according to claim 1, wherein the at least one second electrode includes a plurality of second electrodes. The display according to claim 1, wherein the waveform is a periodic waveform. The display according to claim 1, wherein the active panel includes a color filter, and the color filter includes three color filter units of different colors, which are respectively different from those of the active element array substrate. There are three corresponding settings in the active pixels, wherein the three color filter units with different colors are arranged along a first direction, and the wavy substance substantially extends toward the first direction. The display according to claim 4, wherein the wavy wavelength is an integer multiple of the width of the three color filter units with different colors along the first direction. The display according to claim 2, wherein the active panel includes a color filter, and the color filter includes at least three color filter units different in color from the active element array substrate. The three corresponding settings of these active pixels are arranged, wherein the three color filter units of different colors of the color filter are arranged along a first direction, and the wavy substantially extends toward a second direction. One direction is perpendicular to the second direction. The display according to claim 6, wherein the wave-shaped wave width is an integer multiple of the width of the three color filter units with different colors along the first direction. The display according to claim 1, further comprising: at least one polarizer, wherein the passive panel and the active panel are liquid crystal panels, and the passive panel and the active panel share the polarizer. The display according to claim 8, wherein the passive panel includes a nematic liquid crystal layer sandwiched between the plurality of first electrodes and the at least one second electrode. The display according to claim 8, wherein the active panel includes a horizontally arranged liquid crystal layer, and the active pixels are used to control the horizontally arranged liquid crystal layer. The display according to claim 1, wherein the passive panel comprises: a first substrate; a second substrate; a display medium located between the first substrate and the second substrate, wherein the plurality of first electrodes are located Between the first substrate and the display medium, and the at least one second electrode is located between the second substrate and the display medium; a light-shielding electrode is provided in a gap corresponding to the plurality of first electrodes, and is disposed in the gap; The first substrate or the second substrate; and a driving chip disposed on the first substrate or the second substrate, and electrically connecting the plurality of first electrodes and the at least one second electrode. The display according to claim 11, wherein the light shielding electrode is disposed on the first substrate or the second substrate provided on the driving chip. The display according to claim 12, wherein the passive panel further comprises: a fan-out circuit disposed on the first substrate or the second substrate provided on the driving chip, wherein the at least one second electrode includes a plurality of The second electrode, the fan-out circuit is used to connect one of the plurality of first electrodes and the plurality of second electrodes to the driving chip, wherein the fan-out circuit is made of the same material as the light-shielding electrode. The display according to claim 12, wherein: when the driving chip is disposed on the first substrate, the light shielding electrode is disposed between the plurality of first electrodes and the first substrate; or when the driving chip is disposed on When on the second substrate, the light shielding electrode is disposed between the plurality of second electrodes and the second substrate. The display according to claim 11, wherein the passive panel further comprises: a fan-out circuit disposed on the first substrate for connecting the plurality of first electrodes to the driving chip, wherein the fan-out circuit and the driving chip The material of the light shielding electrode is the same. The display according to claim 11, wherein the second substrate is adjacent to the active panel compared to the first substrate. The display according to claim 1, wherein the at least one second electrode includes a plurality of second electrodes, the plurality of first electrodes and the plurality of second electrodes are respectively arranged in a one-dimensional manner, and the plurality of first electrodes and The plurality of second electrodes overlap to form the passive pixels. The display according to claim 1, wherein the plurality of first electrodes are arranged in a two-dimensional manner, and wherein the plurality of first electrodes overlap the at least one second electrode to form the passive pixels.