Patent ID: 12209734

DETAILED DESCRIPTION

In the following description, in order to clearly present the technical features of the present disclosure, the dimensions (such as length, width, thickness, and depth) of elements (such as layers, films, substrates, and areas) in the drawings will be enlarged in unusual proportions. Accordingly, the description and explanation of the following embodiments are not limited to the quantities, sizes and shapes of the elements presented in the drawings, but should cover the sizes, shapes, and deviations of the two due to actual manufacturing processes and/or tolerances. For example, the flat surface shown in the drawings may have rough and/or non-linear characteristics, and the acute angle shown in the drawings may be round. Therefore, the elements presented in the drawings in this case which are mainly for illustration are intended neither to accurately depict the actual shape and quantity of the elements nor to limit the scope of patent applications in this case.

Moreover, the words, such as “about”, “approximately”, or “substantially”, appearing in the present disclosure not only cover the clearly stated values and ranges, but also include permissible deviation ranges as understood by those with ordinary knowledge in the technical field of the invention. The permissible deviation range can be caused by the error generated during the measurement, where the error is caused by such as the limitation of the measurement system or the process conditions. For example, two objects (e.g., the planes or traces of two substrates) are “substantially parallel” or “substantially perpendicular”, where “substantially parallel” and “substantially perpendicular” mean that the parallelism and the perpendicularity respectively between the two objects may include non-parallelism and non-perpendicularity due to the permissible deviation.

In addition, “about” may be expressed within one or more standard deviations of the values, such as within ±30%, ±20%, ±10%, or ±5%. The word “about”, “approximately” or “substantially” appearing in this text can choose an acceptable deviation range or a standard deviation according to optical properties, etching properties, mechanical properties or other properties, not just one standard deviation to apply all the optical properties, etching properties, mechanical properties and other properties.

FIG.1Ais a schematic plan view of a light emitting panel according to at least one embodiment of this disclosure. Referring toFIG.1A, a light emitting panel100acan be used for a display or a light module (such as a backlight module) and includes a circuit substrate110a. The circuit substrate110ahas a plurality of main pixel areas MP1, and the main pixel areas MP1may be arranged in an array, as shown inFIG.1A.

When the light emitting panel100ais used for a display, the single light emitting panel100acan be made into one display. Alternatively, a plurality of light emitting panels100acan merge into a tiled display. Hence, the circuit substrate110acan have dozens, hundreds, thousands or tens of thousands main pixel areas MP1, where the circuit substrate110ahaving 120 main pixel areas MP1shown inFIG.1Ais not limited to the quantity of the main pixel areas MP1that the circuit substrate110ahas.

FIG.1Bis a partial schematic plan view of two adjacent main pixel areas inFIG.1A. Referring toFIG.1B, each of the main pixel areas MP1is divided into a plurality of subpixel area. TakingFIG.1Bfor example, each of the main pixel areas MP1can be divided into three subpixel areas: a first subpixel area SP21, a second subpixel area SP22and a third subpixel area SP23. In one of the main pixel areas MP1, the first subpixel area SP21, the second subpixel area SP22and the third subpixel area SP23can be arranged in a first direction D1, in which the first direction D1inFIG.1Bmay be a horizontal direction, but not limited to the horizontal direction only.

The first subpixel areas SP21of two adjacent main pixel areas MP1are adjacent to each other and arranged in the first direction D1. InFIG.1B, the order from left to right of the subpixel areas in two adjacent main pixel areas MP1is the third subpixel area SP23, the second subpixel area SP22, the first subpixel area SP21, the first subpixel area SP21, the third subpixel area SP23and the second subpixel area SP22. The two main pixel areas MP1shown inFIG.1Bcan be regarded as the pixel units of the light emitting panel100a. That is, the two main pixel areas MP1shown inFIG.1Brepeatedly arranged in an array can form the main pixel areas MP1shown inFIG.1A.

In the embodiment, each first subpixel area SP21, each second subpixel area SP22and each third subpixel area SP23may take the shape of a strip apiece. TakingFIG.1Bfor example, each first subpixel area SP21, each second subpixel area SP22and each third subpixel area SP23can extend in a second direction D2, where the second direction D2is not parallel to the first direction D1. For example, the second direction D2inFIG.1Bmay be a vertical direction and perpendicular to the first direction D1, but the second direction D2is not limited to the vertical direction only.

The light emitting panel100afurther includes a plurality of first light emitting components121, a plurality of second light emitting components122and a plurality of third light emitting components123, in which the first light emitting components121, the second light emitting components122and the third light emitting components123may be LEDs, such as micro LEDs (μLEDs) or mini LEDs.

The first light emitting components121, the second light emitting components122and the third light emitting components123are disposed on the circuit substrate110a. The first light emitting components121are located in the first subpixel areas SP21respectively, the second light emitting components122are located in the second subpixel areas SP22respectively, and the third light emitting components123are located in the third subpixel areas SP23respectively.

In two first subpixel areas SP21which are adjacent to each other, the first light emitting components121can be arranged in the first direction D1. However, the second light emitting components122in one of the second subpixel areas SP22can be arranged in the second direction D2, and the third light emitting components123in one of the third subpixel areas SP23also can be arranged in the second direction D2.

The first light emitting component121, the second light emitting component122and the third light emitting component123can emit light with various colors. For example, the first light emitting component121can be a red LED emitting red light, the second light emitting component122can be a green LED emitting green light, and the third light emitting component123can be a blue LED emitting blue light. Accordingly, the first light emitting components121, the second light emitting components122and the third light emitting components123can emit red light, green light and blue light respectively, so that the light emitting panel100acan display images. In addition, since the first light emitting components121, the second light emitting components122and the third light emitting components123can emit red light, green light and blue light respectively, the first subpixel areas SP21, the second subpixel areas SP22and the third subpixel areas SP23can be regarded as red pixels, green pixels and blue pixels respectively.

The first light emitting components121in two adjacent first subpixel areas SP21are electrically connected in series, and the circuit substrate110acan include a plurality of control circuits (not shown), in which the two first light emitting components121adjacent to each other and electrically connected in series can be electrically connected to one of the control circuits. Hence, the two first light emitting components121electrically connected in series can be controlled by one of the control circuits to emit light. In addition, the control circuit can include at least one transistor, such as a thin film transistor (TFT).

The circuit substrate110acan further include a plurality of pads111a,111cand traces111s, in whichFIG.1Bdepicts two pads111a, two pads111cand one trace111s. The trace111scan be located below the pads111aand111cand electrically connected to one pad111aand one pad111c. For example, the trace111scan be electrically connected to one pad111aand one pad111cby using two contact windows (not shown). In addition, an insulation layer (not shown) can exist between the trace111sand both of the pads111aand111c, and the contact windows can pass through the insulation layer and thus be electrically connected to the pads111aand111c.

Each of the pads111aand111ccan take the shape of a rectangle, and the trace111scan take the shape of a polyline. In addition, the trace111scan have a middle segment C11and two extension segments E11. The two ends of the middle segment C11are connected to the extension segments E11respectively and located between the extension segments E11, in which the middle segment C11can extend in the second direction D2, and each of the extension segments E11can extend in the first direction D1, as shown inFIG.1B.

The pads111a,111cand the traces111sare located in the first subpixel areas SP21and electrically connected to the first light emitting components121. For example, the first light emitting components121can be mounted on the circuit substrate110aby flip-chip bonding and electrically connected to the pads111aand111cvia solder. In two first subpixel areas SP21adjacent to each other, the pads111a,111cand the trace111sare electrically connected to the electrodes (not shown) of the two first light emitting components121.

TakingFIG.1Bfor example, by using solder, each pad111ais electrically connected to the anode of the first light emitting component121, whereas each pad111cis electrically connected to the cathode of the first light emitting component121. Since the trace111sis electrically connected to the pads111aand111c, the trace111scan be electrically connected to two first light emitting components121, in which the cathode of one first light emitting component121and the anode of the other first light emitting component121are electrically connected to one trace111s, so that the two first light emitting components121are electrically connected in series via the trace111s.

When the pad111awhich is not connected to the trace111s(e.g., the pad111aat the upper left inFIG.1B) supplies positive voltage to the anode of the first light emitting component121, forward biases will be generated in the two first light emitting components121which are electrically connected in series, so that the first light emitting components121can emit light. In addition, in the two first subpixel areas SP21adjacent to each other, the pad111awhich is not connected to the trace111s(e.g., the pad111aat the upper left inFIG.1B) can be electrically connected to the control circuit, so that the control circuit can control the first light emitting components121electrically connected in series to emit light.

Multiple second light emitting components122can be located in one of the second subpixel areas SP22and electrically connected in series. Multiple third light emitting components123can be located in one of the third subpixel areas SP23and electrically connected in series. In addition, in the embodiment as shown inFIG.1B, the circuit substrate110amay further include a plurality of pads112a,113a,112cand113cand a plurality of traces112sand113s, in which the traces112sand113scan be located below the pads112a,113a,112cand113c. The trace112sis electrically connected to one pad112aand one pad112c, whereas the trace113sis electrically connected to one pad113aand one pad113c. The traces112sand113scan be electrically connected to the pads112a,112cand the pads113a,113cby using contact windows (not shown).

The pads112a,112cand the traces112sare located in the second subpixel areas SP22and electrically connected to the second light emitting components122. The pads113a,113cand the traces113sare located in the third subpixel areas SP23and electrically connected to the third light emitting components123. The second light emitting components122and the third light emitting components123can be mounted on the circuit substrate110aby using flip-chip bonding and electrically connected to the pads112a,112c,113aand113cby using solder. In one of the main pixel areas MP1, the pads112a,112cand the traces112sare electrically connected to the electrodes (not shown) of two second light emitting components122, and the pads113a,113cand the traces113sare electrically connected to the electrodes (not shown) of two third light emitting components123, so that the two second light emitting components122are electrically connected in series, and the two third light emitting components123are electrically connected in series.

TakingFIG.1Bfor example, in one of the second subpixel areas SP22, the anode and the cathode of each of the second light emitting components122are electrically connected to the pads112aand112crespectively via solder. Since the trace112sis electrically connected to the pads112aand112c, the second light emitting components122in the second subpixel area SP22can be electrically connected in series via the trace112s. Likewise, in one of the third subpixel areas SP23, the anode and the cathode of each of the third light emitting components123are electrically connected to the pads113aand113cvia solder. Since the trace113sis electrically connected to the pads113aand113c, the third light emitting components123in the third subpixel area SP23also can be electrically connected in series via the trace113s.

When the pad112awhich is not connected to the trace112s(e.g., the upper pad112ainFIG.1B) supplies positive voltage to the anode of the second light emitting component122, forward biases will be generated in the two second light emitting components122which are electrically connected in series, so that the second light emitting components122can emit light. Likewise, when the pad113awhich is not connected to the trace113s(e.g., the upper pad113ainFIG.1B) supplies positive voltage to the anode of the third light emitting component123, forward biases will be generated in the two third light emitting components123which are electrically connected in series, so that the third light emitting components123can emit light.

In addition, one of the pads112a(e.g., the upper pad112ainFIG.1B) in one second subpixel area SP22and one of the pads113a(e.g., the upper pad113ainFIG.1B) in one third subpixel area SP23can be electrically connected to the two control circuits respectively, so that each control circuit can control the two second light emitting components122electrically connected in series or the two third light emitting components123electrically connected in series to emit light.

The first light emitting components121, the second light emitting components122and the third light emitting components123can take the shape of a strip apiece. TakingFIG.1Bfor example, each of the first light emitting components121can have a pair of long sides121aopposite to each other and a pair of short sides121bopposite to each other, in which the long sides121aare connected to the short sides121b. In two first subpixel areas SP21adjacent to each other, the short side121bof one first light emitting component121can be flush with the short side121bof the other first light emitting component121, and a connective line L12formed between the centroids of the first light emitting components121can be substantially parallel to the first direction D1, as shown inFIG.1B.

In the present embodiment, the current efficiency of each of the first light emitting components121may be less than the current efficiency of each of the second light emitting components122and also may be less than the current efficiency of each of the third light emitting components123. Hence, the first light emitting component121has the least current efficiency among the first light emitting component121, the second light emitting component122and the third light emitting component123.

Moreover, seeing fromFIG.1B, the size of each of the first light emitting components121is larger than the size of each of the second light emitting components122and also larger than the size of each of the third light emitting components123, so the light-emitting surface of each of the first light emitting components121is larger than the light-emitting surface of each of the second light emitting components122and also larger than the light-emitting surface of each of the third light emitting components123. Hence, even if the first light emitting component121has low current efficiency, the shining first light emitting component121can provide light having sufficient brightness due to the larger light-emitting surface.

It is particular to note that in another embodiment, the light-emitting wavelength of each of the first light emitting components121can be lower than the light-emitting wavelength of each of the second light emitting components122and also can be lower than the light-emitting wavelength of each of the third light emitting components123. Accordingly, the first light emitting components121can have the lowest light-emitting wavelength among the first light emitting component121, the second light emitting component122and the third light emitting component123.

Specifically, the first light emitting component121can be a blue LED emitting blue light, the second light emitting component122can be a green LED emitting green light, and the third light emitting component123can be a red LED emitting red light, so the first light emitting component121has the lowest light-emitting wavelength. Since the human eye of a normal person has a low sense on blue light, it is not easy for normal people to detect blue light. In the present embodiment, since the first light emitting components121, which are electrically connected in series and emit blue light, have the largest size and the largest light-emitting surface apiece, the first light emitting components121can provide blue light having sufficient brightness to cause a user to detect blue light easily, thereby facilitating color enhancement of images of display.

It is noted that in the above embodiment, the first light emitting component121, the second light emitting component122and the third light emitting components123are mounted on the circuit substrate110aby flip-chip bonding. However, in another embodiment, the first light emitting component121, the second light emitting component122and the third light emitting component123can be mounted on the circuit substrate110aby wire-bonding. Thus, each of the first light emitting component121, the second light emitting component122and third light emitting component123is not limited to be mounted on the circuit substrate110aby flip-chip bonding.

FIG.1Cis a partial schematic plan view of a light emitting panel according to at least one embodiment of this disclosure. Referring toFIG.10, the light emitting panel100cincludes a circuit substrate110c, a plurality of first light emitting components121, a plurality of second light emitting components122and a plurality of third light emitting components123. The light emitting panel100cof the present embodiment is similar to the light emitting panel100aof the previous embodiment. Accordingly, the differences between the light emitting panels100cand100aare mainly described below. The similarity between the light emitting panels100cand100ais basically not repeated.

Unlike the light emitting panel100a, at least one subpixel area of the light emitting panel100chas a subpixel regular region and a subpixel spare region. TakingFIG.10for example, the circuit substrate110chas a plurality of main pixel areas MC1, and each of the main pixel areas MC1is divided into a first subpixel area SP21, a second subpixel area SP32and a third subpixel area SP33. At least one of the second subpixel areas SP32is divided into a second-subpixel regular region R32and a second-subpixel spare region B32, whereas at least one of the third subpixel areas SP33is divided into a third-subpixel regular region R33and a third-subpixel spare region B33. At least one of the second light emitting components122is disposed in the second-subpixel regular region R32, and at least one of the third light emitting components123is disposed in the third-subpixel regular region R33.

The circuit substrate110ccan include a plurality of pads112a,112c,113a,113c, a plurality of spare pads112k,112u,113kand113u, and a plurality of traces112tand113t, in which the pads112a,112c, the spare pads112kand112u, and the traces112tare all disposed in the second subpixel area SP32, whereas the pads113a,113c, the spare pads113kand113u, and the traces113tare disposed in the third subpixel area SP33. In addition, the pads112aand113aalso can be electrically connected to two control circuits respectively.

In one of the second subpixel areas SP32, the pads112aand112care located in the second-subpixel regular region R32, whereas the spare pads112kare112uare located in the second-subpixel spare region B32. The trace112tis located across the second-subpixel regular region R32and the second-subpixel spare region B32that are adjacent to each other. The trace112tis located below both the pad112cand the spare pad112k, where the trace112tcan be electrically connected to one pad112cand one spare pad112kvia contact windows (not shown).

Similar to the second subpixel area SP32, in one of the third subpixel areas SP33, the pads113aand113care located in the third-subpixel regular region R33, whereas the spare pads113kand113uare located in the third-subpixel spare region B33. The trace113tis located across the third-subpixel regular region R33and the third-subpixel spare region B33that are adjacent to each other and located below the pad113cand the spare pad113k, in which the trace113tcan be electrically connected to one pad113cand one spare pad113kby using contact windows (not shown).

In one of the second-subpixel regular regions R32, the second light emitting component122can be electrically connected to the pads112aand112cby flip-chip bonding or wire bonding, where the anode of the second light emitting component122is electrically connected to the pad112a, and the cathode of the second light emitting component122is electrically connected to the pad112c. Accordingly, when the pad112asupplies positive voltage to the anode of the second light emitting component122, the second light emitting component122can emit light, such as green light.

For the same reason, in one of the third-subpixel regular regions R33, the third light emitting component123also can be electrically connected to the pads113aand113cby flip-chip bonding or wire bonding, where the anode of the third light emitting component123is electrically connected to the pad113a, and the cathode of the third light emitting component123is electrically connected to the pad113c. Hence, when the pad113asupplies positive voltage to the anode of the third light emitting component123, the third light emitting component123can emit light, such as blue light. In addition, since the pads112aand113acan be electrically connected to two control circuits respectively, two control circuits can control the second light emitting component122and the third light emitting component123to emit light.

The second-subpixel spare region B32and the third-subpixel spare region B33can provide where another second light emitting component122and another third light emitting component123are disposed, in which the anode and the cathode of the second light emitting component122can be electrically connected to the spare pads112uand112kin the second-subpixel spare region B32respectively, while the anode and the cathode of the third light emitting component123can be electrically connected to the spare pads113uand113kin the third-subpixel spare region B33respectively. When the spare pads112uand113uprovide positive voltage to the anodes of both the second light emitting component122and the third light emitting component123respectively, the second light emitting component122and the third light emitting component123can emit light.

The trace112tis electrically connected to the pad112cand the spare pad113k, and the trace113tis electrically connected to the pad113cand the spare pad113k, so if the two second light emitting components122are disposed in the second-subpixel regular region R32and the second-subpixel spare region B32of one of the second subpixel areas SP32respectively, the two second light emitting components122will be electrically connected in parallel. Likewise, if the two third light emitting components123are disposed in the third-subpixel regular region R33and third-subpixel spare region B33of one of the third subpixel areas SP33respectively, the two third light emitting components123will also be electrically connected in parallel.

From this it can be seen that when the second light emitting component122in the second-subpixel regular region R32of one of the second subpixel areas SP32fails, a normal second light emitting component122can be disposed in the second-subpixel spare region B32of the same second subpixel area SP32to replace the failing second light emitting component122in the second-subpixel regular region R32. For the same reason, when the third light emitting component123in the third-subpixel regular region R33of one of the third subpixel areas SP33fails, a normal third light emitting component123can be disposed on the third-subpixel spare region B33of the same third subpixel area SP33to replace the failing third light emitting component123in the third-subpixel regular region R33.

The spare pads112uand113ucan be electrically connected to two control circuits respectively, so that the two control circuits can control the second light emitting component122in the second-subpixel spare region B32and the third light emitting component123in the third-subpixel spare region B33to emit light. In addition, one control circuit can be electrically connected to the pad112aand the spare pad112u, and the other control circuit can be electrically connected to the pad113aand the spare pad113u.

It is necessary to note that when the second light emitting component122and the third light emitting component123in the second-subpixel regular region R32and the third-subpixel regular region R33work normally, no second light emitting component122and no third light emitting component123will be disposed in the second-subpixel spare region B32and the third-subpixel spare region B33, as shown inFIG.1C.

In addition, in one of the main pixel areas MC1, the second-subpixel regular region R32and the second-subpixel spare region B32can be arranged in the second direction D2, while the third-subpixel regular region R33and the third-subpixel spare region B33also can be arranged in the second direction D2. Hence, the arrangement direction of the second-subpixel regular region R32and the second-subpixel spare region B32and the arrangement direction of the third-subpixel regular region R33and the third-subpixel spare region B33are each different form the arrangement direction of the second subpixel area SP32and the third subpixel area SP33in the same main pixel areas MC1.

It is necessary to note that in the present embodiment, the anode and the cathode of the second light emitting component122are electrically connected to the pads112aand112crespectively, while the anode and the cathode of the third light emitting component123are electrically connected to the pads113aand113crespectively, in which the pads112a,113aand the spare pads112u,113ucan supply positive voltage, but the pads112c,113cand the spare pads112kand113kdo not supply positive voltage.

However, in another embodiment, the anode and the cathode of the second light emitting component122can be electrically connected to the pads112cand112arespectively, and the anode and the cathode of the third light emitting component123can be electrically connected to the pads113cand113arespectively, in which the pads112c,113cand the spare pads112k,113kcan supply positive voltage, but the pads112a,113aand the spare pads112u,113udo not supply positive voltage. Accordingly, the anodes of both the second light emitting component122and the third light emitting component123are not limited to be electrically connected to the pads112a,113aand the spare pads112u,113u, while the cathodes of both of them are not limited to be electrically connected to the pads112c,113cand the spare pads112k,113k.

FIG.1Dis a partial schematic plan view of a light emitting panel according to at least one embodiment of this disclosure. Referring toFIG.1D, the light emitting panel100dof the present embodiment is similar to the light emitting panel100aof the previous embodiment. For this reason, the differences between the light emitting panels100dand100aare mainly described below while the similarity between the light emitting panels100dand100ais basically not repeated.

In the light emitting panel100d, the circuit substrate110dhas a plurality of main pixel areas MD1, and each of the main pixel areas MD1can be divided into a first subpixel area SP21, a second subpixel area SP42and a third subpixel area SP43. Unlike the circuit substrate110a, in one of the main pixel areas MD1, the second subpixel area SP42and the third subpixel area SP43are arranged in the second direction D2, in which the second subpixel area SP42and the third subpixel area SP43can take the shape of a square or a rectangle like square, as shown inFIG.1D.

The circuit substrate110dincludes a plurality of pads112a,113a,112c,113cand a plurality of traces212sand213s, where the pads112a,112cand the traces212sare located in the second subpixel areas SP42, and the pads113a,113cand the traces213sare located in the third subpixel areas SP43. At least two second light emitting components122can be disposed in one of the second subpixel areas SP42. In one of the second subpixel areas SP42, the anode and the cathode of each second light emitting component122are electrically connected to the pads112aand112crespectively, and the trace212scan be electrically connected to one pad112aand one pad112cby using contact windows (not shown), so that the two second light emitting components122are electrically connected in series.

Likewise, at least two third light emitting components123can be disposed in one of the third subpixel areas SP43. In one of the third subpixel areas SP43, the anode and the cathode of each of the third light emitting components123are electrically connected to the pads113aand113crespectively, while the trace213scan be electrically connected to one pad113aand one pad113cby using contact windows (not shown), so that the two third light emitting components123are electrically connected in series. In addition, unlike the previous traces112sand113s, the traces212sand213scan take the shape of a polyline apiece, in which the shape of each of the traces212sand213scan be the same as the shape of the trace111sin the first subpixel area SP21.

FIG.1Eis a partial schematic plan view of a light emitting panel according to at least one embodiment of this disclosure. Referring toFIG.1E, the light emitting panel100eof the present embodiment is similar to the light emitting panel100das shown inFIG.1D. For example, the light emitting panel100eincludes a circuit substrate110e. The circuit substrate110ehas a plurality of main pixel areas ME1while each of the main pixel areas ME1can be divided into a first subpixel area SP21, a second subpixel area SP42and a third subpixel area SP53, where in two first subpixel areas SP21adjacent to each other, the first light emitting components121are arranged in the first direction D1.

The differences between the light emitting panels100dand100eare mainly described below and the similarity of both is basically not repeated. Specifically, in the light emitting panel100eand in two adjacent first subpixel areas SP21, any one of the first light emitting components121can protrude from the short side121bof another first light emitting component121, and a connective line L15formed between the centroids121cof the two first light emitting components121is parallel to neither the first direction D1nor the second direction D2. Hence, the short sides121bof the two adjacent first light emitting components121electrically connected in series are not flush with each other, and the two first light emitting components121are distributed in dislocation. In this way, it can facilitate the uniform distribution of the first light emitting components121, the second light emitting components122and the third light emitting components123, so as to enhance the quality of images.

Since any one of the first light emitting components121protrudes from one of the short sides121bof another first light emitting component121, the trace211sused for electrically connecting the first light emitting components121in series can take the shape of a rectangle and extend in the first direction D1, where the trace211sis located below the pads111aand111cand can be electrically connected to the pad111ain one of the first subpixel areas SP21and the pad111cin another first subpixel area SP21via contact windows. In contrast to the trace111sin the previous embodiment, the trace211snot only has a simple shape and thus reduces the difficulty of circuit design, but also can shorten the conductive path between the first light emitting components121, thereby promoting decrease in the impedance among the first light emitting components121.

The third subpixel area SP53is different from the third subpixel area SP43inFIG.1D. Specifically, each of the third subpixel area SP53is divided into a third-subpixel regular region R53and a third-subpixel spare region B53. In one of the main pixel areas ME1, the third-subpixel regular region R53and the third-subpixel spare region B53are arranged in the first direction D1.

The circuit substrate110ecan include a plurality of pads113a,113c, a plurality of spare pads113k,113uand a plurality of traces113xand113y, in which the pads113a,113c, the spare pads113k,113uand the traces113xand113yare located in the third subpixel areas SP53and electrically connected to the third light emitting components123.

The pads113aand113care located in the third-subpixel regular region R53, whereas the spare pads113uand113kare located in the third-subpixel spare region B53. Each of the traces113xand113yis located across the third-subpixel regular region R53and the third-subpixel spare region B53that are adjacent to each other. Each of the traces113xand113ycan extend in the first direction D1and be arranged in the second direction D2, in which each of the traces113xis electrically connected to the adjacent pads113aand113u, and each of the traces113yis electrically connected to the adjacent pads113cand113k.

The anode of each of the third light emitting components123can be electrically connected to the pads113a, and the cathode of each of the third light emitting components123can be electrically connected to the pads113c. If two third light emitting components123are respectively disposed in the third-subpixel regular region R53and the third-subpixel spare region B53of one of the third subpixel areas SP53, where the anodes of the two third light emitting components123are electrically connected to the pads113aand113urespectively, and the cathodes of the two third light emitting components123are electrically connected to the pads113cand113k, the two third light emitting components123will be electrically connected in parallel. From this it can be seen that when the third light emitting component123in the third-subpixel regular region R53of one of the third subpixel areas SP53fails, a normal third light emitting component123can be disposed in the third-subpixel spare region B53of the same third subpixel area SP53to replace the failing third light emitting component123.

FIG.2Ais a partial schematic plan view of a light emitting panel according to at least one embodiment of this disclosure. Referring toFIG.2A, the light emitting panel200aincludes a circuit substrate210a, and the circuit substrate210ahas a plurality of main pixel areas MA2. Each of the main pixel areas MA2can be divided into a first subpixel area SP21, a second subpixel area SP22a third subpixel area SP33. The circuit substrate210acan include pads112a,112c,113a,113c, traces112s,113tand spare pads113uand113k. The light emitting panel200aincludes a plurality of second light emitting components122electrically connected to the pads112a,112cand the traces112sand a plurality of third light emitting components123electrically connected to the pads113a,113cand the traces113t.

The arrangements of the pads112a,112c,113a,113c, the traces112s,113tand the spare pads113k,113uand the electric connections of both the second light emitting components122and the third light emitting components123to the pads112a,112c,113a,113c, the spare pads113kand113uare basically similar to those of the previous embodiment, like the second subpixel area SP22inFIG.1Band the third subpixel area SP33inFIG.10. Hence, the light emitting panel200ais similar to the light emitting panels100aand100cof the previous embodiments. The differences between the light emitting panel200aand the light emitting panels of the previous embodiments are mainly described below, and the similarity is basically not repeated.

Each main pixel area MA2has a first subpixel area SP21, and the circuit substrate210afurther includes a plurality of pads111a,111cand traces111s, in which the pads111a,111cand the trace111sare disposed in two first subpixel areas SP21adjacent to each other, and multiple first light emitting components121included in the light emitting panel200aare electrically connected to the pads111a,111cand the trace111s. The trace111sis located below the pads111aand111cand electrically connected to the pad111ain one first subpixel area SP21and the pad111cin the other first subpixel area SP21.

The arrangement of the pads111a,111cand the trace111sinFIG.2Ais different from the previous arrangements of the pads111a,111cand the traces111sinFIGS.1B to1D. Specifically, unlike the traces111sinFIGS.1B to1D, inFIG.2A, the middle segment C11of the trace111sextends in the first direction D1, and the extension segment E11of the trace111sextends in the second direction D2, as shown inFIG.2A.

ComparingFIG.2AandFIG.1B, it can be understood that the pads111a,111cand the trace111sinFIG.2Aare basically the same as the pads111a,111cand the trace111sinFIG.1Bthat is rotated 90 degrees to the right. Hence, the first light emitting components121disposed in the two first subpixel areas SP21adjacent to each other are arranged in the second direction D2, in which each of the long sides121aof the first light emitting components121extends in the first direction D1, and each of the short sides121bextends in the second direction D2, so that at least one of the first light emitting components121can be located across two first subpixel areas SP21adjacent to each other. TakingFIG.2Afor example, each of the first light emitting components121can extend from one first subpixel area SP21to another first subpixel area SP21.

FIG.2Bis a partial schematic plan view of a light emitting panel according to at least one embodiment of this disclosure. Referring toFIG.2B, the light emitting panel200bof the present embodiment is similar to the light emitting panel200aof the previous embodiment, and the differences between the light emitting panels200band200aare mainly described below. The similarity between the light emitting panels200band200ais basically not repeated.

Specifically, the light emitting panel200bincludes a circuit substrate210b, and the circuit substrate210bhas a plurality of main pixel areas MB2, in which each of the main pixel areas MB2can be divided into a first subpixel area SP21, a second subpixel area SP22and a third subpixel area SP23. Unlike the circuit substrate210aof the previous embodiment, since the main pixel area MB2has the third subpixel area SP23, so the circuit substrate210bincludes pads113a,113cand traces113s. In other words, the circuit substrate210bhas the third subpixel areas SP23as shown inFIG.1Band the pads113a,113cand the traces113s.

Each of the main pixel areas MB2also has a first subpixel area SP21, and the circuit substrate210bfurther includes a plurality of pads111a,111cand traces211s, where the multiple first light emitting components121included in the light emitting panel200bare electrically connected to the pads111a,111cand the traces211s. Unlike the light emitting panel200ain the previous embodiment, in two adjacent first subpixel areas SP21, any one of the first light emitting components121protrudes from one of the short sides121bof another first light emitting component121, and a connective line L15between the centroids121cof two first light emitting components121is parallel to neither the first direction D1nor the second direction D2.

ComparingFIG.2BandFIG.1E, it can be understood that the shapes of the pads111a,111cand the trace211sinFIG.2Bare basically the same as the shapes of the pads111a,111cand the trace111sinFIG.1B. However, the trace211sinFIG.2Bextends in the second direction D2, unlike the trace211sextending in the first direction D1inFIG.1E. Hence, in the embodiment shown inFIG.2B, the first light emitting components121disposed in the two first subpixel areas SP21adjacent to each other also can be arranged in the second direction D2and extend from one first subpixel area SP21to another first subpixel area SP21.

FIG.2Cis a partial schematic plan view of a light emitting panel according to at least one embodiment of this disclosure. Referring toFIG.2C, the light emitting panel200cof the present embodiment is similar to the light emitting panel200bof the previous embodiment, where a circuit substrate210cincluded in the light emitting panel200chas a plurality of main pixel areas MC2, and each of the main pixel areas MC2can be divided into a first subpixel area SP21, a second subpixel area SP32and a third subpixel area SP33.

Unlike the previous circuit substrate210b, since the main pixel area MC2has the second subpixel area SP32and the third subpixel area SP33, the circuit substrate210cfurther has a second-subpixel regular region R32, a second-subpixel spare region B32, a third-subpixel regular region R33and a third-subpixel spare region B33, and includes a plurality of pads112a,112c,113a,113c, a plurality of spare pads112u,112k,113uand113kand a plurality of traces112t,113tand211s. In addition, the circuit design and functions of the pads112a,112c,113a,113c, the spare pads112u,112k,113uand113kand the trace112t,113tand211sare described in the previous embodiment ofFIG.10and thus are not repeated.

FIG.2Dis a partial schematic plan view of a light emitting panel according to at least one embodiment of this disclosure. Referring toFIG.2D, the light emitting panel200dof the present embodiment is similar to the light emitting panel200aof the previous embodiment. For example, a circuit substrate210dincluded in the light emitting panel200dhas a plurality of main pixel areas MD2, where each of the main pixel areas MD2can be divided into a first subpixel area SP21, a second subpixel area SP22and a third subpixel area SP33.

However, the only difference between the light emitting panels200dand200ais that the circuit substrate210dincludes a plurality of pads111a,111cand traces211s, and a plurality of first light emitting components121included in the light emitting panel200dare electrically connected to the pads111a,111cand traces211s, in which the light emitting panel200ahas no trace211s. In addition, comparingFIG.2DandFIG.2A, it can be understood that the light emitting panel200dinFIG.2Dis substantially obtained by replacing the traces111s, the pads111a,111cand the first light emitting components121inFIG.2Awith the traces211s, the pads111a,111cand the first light emitting components121inFIG.2B.

FIG.3is a partial schematic plan view of a light emitting panel according to at least one embodiment of this disclosure. Referring toFIG.3, the light emitting panel300of the present embodiment includes a circuit substrate310, and the circuit substrate310has a plurality of main pixel areas MP3, in which each of the main pixel areas MP3is divided into a first subpixel area SP31, a second subpixel area S32and a third subpixel area SP33. The light emitting panel300is similar to the light emitting panel200dshown inFIG.2D. For this reason, the differences between the light emitting panels300and200dare mainly described below while the similarity between the light emitting panels300and200dis basically not repeated.

Specifically, in two adjacent main pixel areas MP3, at least one of the second subpixel areas S32is further distributed between the long side121aof one of the first light emitting components121and the short side121bof the other first light emitting component121which is adjacent to the previous first light emitting component121. Hence, in contrast to the light emitting panel200dshown inFIG.2D, in the present embodiment, the second subpixel area S32can have a large area, whereas the first subpixel area SP31can have a small area.

At least one of the second light emitting components122can be disposed in the second subpixel area S32. TakingFIG.3for example, multiple second light emitting components122, such as two second light emitting components122, can be disposed in each of the second subpixel areas S32. Moreover, at least one second subpixel area S32, e.g., each second subpixel area S32, can be divided into a second-subpixel regular region32R and a second-subpixel spare region32B, where the second-subpixel spare region32B is distributed between the long side121aof one of the first light emitting components121and the short side121bof the other first light emitting component121which is adjacent to the previous first light emitting component121, as shown inFIG.3.

The circuit substrate310can include a plurality of pads112a,112c, a plurality of spare pads312k,312uand a plurality of traces312aand312b, in which the pads112a,112c, the spare pads312uand the traces312a,312bare located in the second subpixel areas S32respectively and can be used to be electrically connected to the second light emitting components122.

The pads112a,112cand the traces312bare all located in one of the second-subpixel regular regions32R. The trace312bin one of the second-subpixel regular regions32R is located below the pads112aand112cand electrically connected to the pads112aand112c, so that two adjacent second light emitting components122are electrically connected in series.

In one of the second subpixel areas S32, the spare pads312uand312kare located in the second-subpixel spare region32B, while the trace312ais located across the second-subpixel regular region32R and the second-subpixel spare region32B that are adjacent to each other and is electrically connected to one pad112cand one spare pads312k. In one of the second-subpixel spare regions32B, the anode and the cathode of the second light emitting component122can be electrically connected to the spare pads312uand312krespectively, where the spare pads312ucan supply positive voltage to the anode of the second light emitting components122, so that the second light emitting component122can emit light (e.g., such as green light).

In the embodiment shown inFIG.3, when the lower second light emitting component122in the left second-subpixel regular region32R fails, a normal second light emitting component122can be disposed in the second-subpixel spare region32B of one of the second subpixel areas S32to replace the failing second light emitting component122. Likewise, when the upper second light emitting component122in right second-subpixel regular region32R fails, a normal second light emitting component122can be disposed in the second-subpixel spare region32B of one of the second subpixel areas S32to replace the failing second light emitting component122. In addition, the pads112aand112cin each of second-subpixel regular regions32R inFIG.3can be interchanged, soFIG.3does not limit the arrangement of the pads112aand112c.

It is particular to note that in the embodiment shown inFIG.3, the arrangement order of the subpixel areas in two adjacent main pixel areas MP3is different from that of the previous embodiment. In detail, inFIG.3, the order from left to right of the subpixel areas in two adjacent main pixel areas MP3is the third subpixel area SP33, the second subpixel area S32, the first subpixel area SP31, the first subpixel area SP31, the second subpixel area S32and the third subpixel area SP33. Accordingly, in two adjacent main pixel areas MP3, the first subpixel areas SP31is located between two second subpixel areas S32, and the second subpixel area S32is located between two third subpixel areas SP33.

The following table (1) discloses the current efficiencies, the panel drive voltages and the relative power consumption of light emitting panels of both an embodiment and a control sample. The light emitting panels of the embodiment and the control sample each include the first light emitting components121, the second light emitting components122and the third light emitting components123. In the table (1), the first light emitting components121are red LEDs, the second light emitting components122are green LEDs, and the third light emitting components123are blue LEDs.

TABLE 1Control sampleEmbodimentRedGreenBlueRedGreenBluelightlightlightlightlightlightCurrent efficiency22.3791138.215811(Unit: cd/A)Panel drive voltage1011.511.59(Unit: V)Relative power100%60%consumption

The light emitting panel of the control sample has two adjacent main pixel areas, where a first light emitting component121(red LED), a second light emitting components122(green LED) and a third light emitting components123(blue LED) are disposed in the two adjacent main pixel areas. In addition, in the control sample of the table (1), any two of the first light emitting components121, the second light emitting components122and the third light emitting components123are not electrically connected in series.

The light emitting panel of the embodiment has two adjacent main pixel areas, where two first light emitting components121(red LED) electrically connected in series, four second light emitting components122(green LED) and two third light emitting components123(blue LED) which are not electrically connected in series. Two of the four second light emitting components122are electrically connected in series, and the other two second light emitting components122are electrically connected in series, such as the light emitting panel200aas shown inFIG.2A.

In the embodiment of the table (1), the current efficiency of each of the first light emitting components (red LED)121is about 19.1 cd/A, so the current efficiency of the two first light emitting components121in two adjacent main pixel areas is about 38.2 cd/A, as shown in table (1). Likewise, In the embodiment of the table (1), the current efficiency of each of the second light emitting components (green LED)122is about 79 cd/A, so the current efficiency of two second light emitting components122in two adjacent main pixel areas are about 158 cd/A.

It can be understood from the above table (1) that the light emitting panel of the embodiment has a high panel drive voltage, but the light emitting panel of the embodiment not only has good current efficiency, but also has lower relative power consumption (about 60%) than control sample. Hence, according to table (1), the luminous efficiency (e.g., current efficiency) of the embodiment is better than the luminous efficiency of the control sample. Therefore, by using multiple light emitting components electrically connected in series, at least one of the embodiment can improve the luminous efficiency of the light emitting panel, thereby enhancing the quality of images of the display.

Although the present disclosure has been described in considerable detail with reference to certain embodiments thereof, other embodiments are possible. Therefore, the spirit and scope of the appended claims should not be limited to the description of the embodiments contained herein.

It will be apparent to those skilled in the art that various modifications and variations can be made to the structure of the present disclosure without departing from the scope or spirit of the disclosure. In view of the foregoing, it is intended that the present disclosure cover modifications and variations of this disclosure provided they fall within the scope of the following claims.